Month: June 2024
hey guys pls help me to resolve a very annoyng problem
this microsoft terms poping up and also when i press Fn+Esc then F11 key got repeated press automatically Read More
What Do When Getting Error code 9000 when submitting pay-roll after recent update?
I am encountering Error Code 9000 when submitting pay-roll in our system. This error stops the submission process, and I’m unable to proceed with pay-roll tasks. What could be causing this issue, and what steps can I take to resolve it?
I am encountering Error Code 9000 when submitting pay-roll in our system. This error stops the submission process, and I’m unable to proceed with pay-roll tasks. What could be causing this issue, and what steps can I take to resolve it? Read More
What to Do When Getting Quick-Books Error 1903 after new update?
I encountered Quick-Books Error 1903 while installing or updating the software. It says, “This error occurs when there is an issue with the Windows operating system.” Can you provide detailed troubleshooting steps to resolve this error?
I encountered Quick-Books Error 1903 while installing or updating the software. It says, “This error occurs when there is an issue with the Windows operating system.” Can you provide detailed troubleshooting steps to resolve this error? Read More
Copilot Outlook addin – Tracking saving recurring Appointment
Hello,
Is it possible to track a series of meetings in the Copilot add-in?
In the Dynamics App for Outlook application, there was such an option, I can open the entire series and save it to Dynamics 365. In the copilot add-on, a message appears about the inability to track the reccuring meeting. In Copilot presentations, Microsoft indicates that all Dynamics App for Outllok functionalities are (or will be) included in Copilot. Does anyone know anything more about recurring meetings in Copliot Outlook ad in?
Hello,Is it possible to track a series of meetings in the Copilot add-in? In the Dynamics App for Outlook application, there was such an option, I can open the entire series and save it to Dynamics 365. In the copilot add-on, a message appears about the inability to track the reccuring meeting. In Copilot presentations, Microsoft indicates that all Dynamics App for Outllok functionalities are (or will be) included in Copilot. Does anyone know anything more about recurring meetings in Copliot Outlook ad in? Read More
How to Resolve Quick-Books error ps107 after recent update?
I’m encountering Quick-Books error PS107, which is preventing me from updating pay-roll. The error message mentions an internal file that cannot be read. How can I fix this issue to continue processing pay-roll smoothly?
I’m encountering Quick-Books error PS107, which is preventing me from updating pay-roll. The error message mentions an internal file that cannot be read. How can I fix this issue to continue processing pay-roll smoothly? Read More
How can I resolve Quick-Books Error 40001 after latest update?
I’m encountering “Quick-Books Error 40001” when trying to update my pay-roll. Can you provide some troubleshooting steps to resolve this issue?
I’m encountering “Quick-Books Error 40001” when trying to update my pay-roll. Can you provide some troubleshooting steps to resolve this issue? Read More
“In-page search” feature in Edge 128 now opens in the sidebar. I want this feature Block
It seems that the “In-page search” feature in Edge 128 now opens in the sidebar. This sidebar can also open other websites, creating potential loopholes for filters, which is very troublesome.
Does anyone know how to prevent the sidebar from opening?
It seems that the “In-page search” feature in Edge 128 now opens in the sidebar. This sidebar can also open other websites, creating potential loopholes for filters, which is very troublesome.Does anyone know how to prevent the sidebar from opening? Read More
Azure Arc enabled SQL Server – determine your Azure SQL target with ease and confidence
Azure Arc enabled SQL Server enables you to manage, secure and govern your SQL Server estate from Azure. At the same time, it also enables you to streamline your Azure migration and modernization journey.
Azure SQL migration assessment runs continuously on a schedule (every Sunday at 11:00 PM local time as configured on the server) and helps provide
Readiness assessment: Discover, assess, and measure the Azure SQL readiness of the Arc-enabled SQL Servers. This will help identify the SQL Server workloads that are ready to migrate, identify any migration risks, and provide mitigation recommendations.
Azure SQL Size recommendations: Get best-fit recommendations, with right-sizing based on performance history and service tier recommendations.
With the release of the on-demand assessment capability, you now can trigger this assessment as required. Simply click Run assessment to trigger a new assessment request. The on-demand assessment does not interrupt any subsequent scheduled runs.
An important scenario where this would be very useful is after you have taken remedial action(s) to address any compatibility issues previously detected. If you prefer not to wait for the next schedule run of the assessment, you can trigger one right away.
Another scenario would be where no assessment has been created so far because the scheduled run has not yet been triggered. Again, you can trigger one right away.
Once the assessment completes the last assessment time is updated and the fresh assessment results are displayed:
You can now review the migration assessment result and get the latest readiness information and suggested target Azure configuration.
With this feature, when you decide that a SQL Server instance is eligible for migration to Azure, you can have the updated information readily available to make a confident choice and move forward.
Ready to transform the way you manage, secure and govern your SQL Server instances? Learn how to Arc enable your SQL Servers today and get started right away!
Microsoft Tech Community – Latest Blogs –Read More
Algebraic Loops with FMU
When connecting FMUs in co-simulation mode in a loop an algebraic loop errors occurs, which causes termination of simulation. Therefore, I assume Simulink identifies the FMU-blocks as direct feedthrough. In the FMI 3.0 specification it is stated, that there cannot be a direct feedthough in Co-Simulation, as the step-size has to be greater that 0. Why does Simulink handle FMUs in co-simulation mode as direct feedthrough (and not like integrator blocks instead)?
Unfortunately I could not find anything regarding how the C-API functions of the FMUs are called by the Simulink discrete fixed-step solver.When connecting FMUs in co-simulation mode in a loop an algebraic loop errors occurs, which causes termination of simulation. Therefore, I assume Simulink identifies the FMU-blocks as direct feedthrough. In the FMI 3.0 specification it is stated, that there cannot be a direct feedthough in Co-Simulation, as the step-size has to be greater that 0. Why does Simulink handle FMUs in co-simulation mode as direct feedthrough (and not like integrator blocks instead)?
Unfortunately I could not find anything regarding how the C-API functions of the FMUs are called by the Simulink discrete fixed-step solver. When connecting FMUs in co-simulation mode in a loop an algebraic loop errors occurs, which causes termination of simulation. Therefore, I assume Simulink identifies the FMU-blocks as direct feedthrough. In the FMI 3.0 specification it is stated, that there cannot be a direct feedthough in Co-Simulation, as the step-size has to be greater that 0. Why does Simulink handle FMUs in co-simulation mode as direct feedthrough (and not like integrator blocks instead)?
Unfortunately I could not find anything regarding how the C-API functions of the FMUs are called by the Simulink discrete fixed-step solver. fmu, fmi, algebraic loops, discrete fixed-step solver, fmu-block MATLAB Answers — New Questions
Hyper-V Application Issues
So I have moved a client from an old HP server to a new HP Gen 11 server running Server 2022 and Hyper-V.
Everything is patched and running the newest firmware releases from HP>
In the VM running server 2022 there is an application that runs very slowly when moved to the new hardware.
We can not find the cause of the issue, but once moved back it runs fine.
A new VM was created to run the application and it was the same.
Everything else is fine and running as expected.
If anyone can suggest what the cause could be?
So I have moved a client from an old HP server to a new HP Gen 11 server running Server 2022 and Hyper-V.Everything is patched and running the newest firmware releases from HP> In the VM running server 2022 there is an application that runs very slowly when moved to the new hardware.We can not find the cause of the issue, but once moved back it runs fine.A new VM was created to run the application and it was the same. Everything else is fine and running as expected. If anyone can suggest what the cause could be? Read More
how to merge data from one table to another, student id assign
Good Morning,
how to assign query one results to query 2 student id, each record should have each value, rather assigning one to all 20k students. please advise. i tried one but it is assigned same id to all STG_Student. please
— Query 1
SELECT STATESTUDENTID
FROM DEV_SLDS.LEGACY.STUDENTIDPOOL
WHERE IDSTATUS = ‘UNASSIGNED’
AND DATEINITIALASSIGNED IS NULL
— This query resylts gives several thousands of studentid numbers that are never assigned to student.
— Query 2 this STATEIDENTIFICATIONNUMBER need to populate with query 1 each record should have one unique record from query 1
SELECT * FROM STAGE.STG_STUDENT s
SET STATEIDENTIFICATIONNUMBER = Assign from STUDENTIDPOOL.STATESTUDENTID
WHERE COMMENTS = ‘NEW ID FROM POOL REQUIRED’
and trim(FILEID) = trim(‘a0xHv000000fNWqIAM ‘)
AND STATEIDENTIFICATIONNUMBER IS NULL;
Thank you,
Asit
Good Morning, how to assign query one results to query 2 student id, each record should have each value, rather assigning one to all 20k students. please advise. i tried one but it is assigned same id to all STG_Student. please — Query 1SELECT STATESTUDENTIDFROM DEV_SLDS.LEGACY.STUDENTIDPOOLWHERE IDSTATUS = ‘UNASSIGNED’AND DATEINITIALASSIGNED IS NULL— This query resylts gives several thousands of studentid numbers that are never assigned to student.– Query 2 this STATEIDENTIFICATIONNUMBER need to populate with query 1 each record should have one unique record from query 1SELECT * FROM STAGE.STG_STUDENT sSET STATEIDENTIFICATIONNUMBER = Assign from STUDENTIDPOOL.STATESTUDENTIDWHERE COMMENTS = ‘NEW ID FROM POOL REQUIRED’and trim(FILEID) = trim(‘a0xHv000000fNWqIAM ‘)AND STATEIDENTIFICATIONNUMBER IS NULL; Thank you,Asit Read More
Error using confusionchart (line 68) Order must be an exact permutation of the class labels.
Please help with this error – what could be the cause?
Error using confusionchart (line 68)
Order must be an exact permutation of the class labels.Please help with this error – what could be the cause?
Error using confusionchart (line 68)
Order must be an exact permutation of the class labels. Please help with this error – what could be the cause?
Error using confusionchart (line 68)
Order must be an exact permutation of the class labels. confusionchart MATLAB Answers — New Questions
Windows 7 32 bit activation loss after VM reboot
Dear All,
My client whose system is still an old VMWare system (Vphere 5.5/EXSi 5.5), running windows 7 32bit VM, recently report that the windows 7 become non genuine after a scheduled reboot. What would be the cause and how to fix the issue so the windows 7 32 bit VM can resume genuine version?
Dear All, My client whose system is still an old VMWare system (Vphere 5.5/EXSi 5.5), running windows 7 32bit VM, recently report that the windows 7 become non genuine after a scheduled reboot. What would be the cause and how to fix the issue so the windows 7 32 bit VM can resume genuine version? Read More
One of check for difference
Hi Team
I am looking for ways to look for differences between Columns B and AA. B is from my main sheet and AA is from a different Dbase. In our list of over 250 addresses, we are missing 8 from the main sheet.
This is probably a one of check so it doesn’t have to be pretty
Cheers
Hi Team I am looking for ways to look for differences between Columns B and AA. B is from my main sheet and AA is from a different Dbase. In our list of over 250 addresses, we are missing 8 from the main sheet.This is probably a one of check so it doesn’t have to be prettyCheers Read More
How to remove Exchange Mgmt. Tools and re-install them?
I have a single Exchange 2016 server (CU 23) that in a hybrid configuration with M365. Something has happened and now I can’t use Exchange Mgmt. Shell on the Exchanger Server.
(“CannotConnect,PSSessionOpenFailed” is the ultimate error I see in the PS window when I launch it)
As a work-around I install the mgmt tools on another server (non-Exchange) and am successful in connecting to the exchange server with Exchange mgmt shell remotely. I would like to remove and reinstall the management tools on the server to try and resolve this issue. Presently, I’m not getting good backups so this is rather important. (my backup SW needs to connect to exchange server via PowerShell)
When I launch the CU 23 setup process the option to remove management tools is greyed out. (coincidentally so is the option to install Edge transport role which isn’t installed)
What is the best course of action to attempt to remove and reinstall the exchange management tools?
Since this is a hybrid setup I’m a bit concerned about doing anything that could break it.
Since this is a VM in Azure, I could deploy a second Exchange Server and move all the mailboxes to that server so I could at least get good backups of the mailboxes. Not ideal, but an option.
Thanks.
I have a single Exchange 2016 server (CU 23) that in a hybrid configuration with M365. Something has happened and now I can’t use Exchange Mgmt. Shell on the Exchanger Server. (“CannotConnect,PSSessionOpenFailed” is the ultimate error I see in the PS window when I launch it) As a work-around I install the mgmt tools on another server (non-Exchange) and am successful in connecting to the exchange server with Exchange mgmt shell remotely. I would like to remove and reinstall the management tools on the server to try and resolve this issue. Presently, I’m not getting good backups so this is rather important. (my backup SW needs to connect to exchange server via PowerShell) When I launch the CU 23 setup process the option to remove management tools is greyed out. (coincidentally so is the option to install Edge transport role which isn’t installed) What is the best course of action to attempt to remove and reinstall the exchange management tools? Since this is a hybrid setup I’m a bit concerned about doing anything that could break it. Since this is a VM in Azure, I could deploy a second Exchange Server and move all the mailboxes to that server so I could at least get good backups of the mailboxes. Not ideal, but an option. Thanks. Read More
Recall menu appears in start menu?
Just looked at my start menu to clean up some clutter and saw Recall (preview) on the list.
Just looked at my start menu to clean up some clutter and saw Recall (preview) on the list. Read More
TD3 agent fails to explore again after hitting the max action and gets stuck at the max action value. Additionally, the Q0 value exploded to large value.
The range of the a single action = 0.01 to 5. During learning using TD3, the learning is consist. However, if the agent applies the maximum values, it get stuck fails to explores lower values and suddenly does not improve or deteriorate further. I am not sure what could be the reason. The Q0 value explodes at this point. at this point.The range of the a single action = 0.01 to 5. During learning using TD3, the learning is consist. However, if the agent applies the maximum values, it get stuck fails to explores lower values and suddenly does not improve or deteriorate further. I am not sure what could be the reason. The Q0 value explodes at this point. at this point. The range of the a single action = 0.01 to 5. During learning using TD3, the learning is consist. However, if the agent applies the maximum values, it get stuck fails to explores lower values and suddenly does not improve or deteriorate further. I am not sure what could be the reason. The Q0 value explodes at this point. at this point. reinforcement learning, stuck learning, td3 MATLAB Answers — New Questions
errors with Simscape and SSC HDL Coder Workflow Advisor
hello, I’m having some really frustrating problems with Simscape and sschdladvisor.
there is going to be a lot of context up ahead, but I assure you it isn’t very dense at all.
—
initially, I tried following this document to generate HDL code, where they load the Full Wave Bridge Rectifier example. after following along and executing the workflow advisor tool, though, I’m met with the following warning at the very end (I renamed the simulink file to "fwbr"):
Warning
Run hdlsetup on the model ‘fwbr’ to modify configuration parameter values recommended for HDL code generation and rerun the workflow. Generated implementation model ‘gmStateSpaceHDL_fwbr’ with the ‘HDL settings’. The HDL Algorithm requires latency. Each output port experiences 1 additional delay.
but this is essentially an error, because it does not in fact generate the "gmStateSpaceHDL_fwbr" model. when I try opening it, I get the following error:
‘C:UsersCrisDocumentsMATLABssc_bcsschdlfwbrgmStateSpaceHDL_fwbr’ is not a valid Simulink object name and there is no file with that name.
there’s absolutely no configuration in the model nor in the Workflow Advisor I can use to make this warning go away.
I then run into the command sschdl.generateOptimizedModel, which was introduced in the R2024a version of MATLAB, which can replace all the Simscape components that might cause issues for HDL code generation into their dynamic block equivalent. after this and after making sure the generated optimized model is behaviourally identical, I can finally execute the Workflow Advisor with no problems.
—
after that, I try following along a different example, the Halfwave Rectifier model. this one executes flawlessly right off the bat and I get a dynamic system equivalent model out of the Workflow Advisor, for which I can then generate VHDL code with 0 issues.
—
I then try to make my own simscape system, a simple buck converter:
but I run into exactly the same issue as I did with the full wave bridge rectifier where it would throw that "warning" that wouldn’t let me actually generate the HDL coder adapted model. I then find this document with a buck converter model example, which executes flawlessly. this part in particular puzzles me, because in an attempt to find the problem with my own implementation I start moving parameters around both in the system and in the model settings themselves. eventually, I end up straight up copy-pasting the entire system into my own .slx file, and configure every single setting to be exactly the same as the example’s, and it still won’t let me generate the model by showing me that warning from before.
I tried applying the generateOptimizedModel command, but to my dismay it completely changed the behaviour of my circuit, and I could pinpoint that the one block causing the change in behaviour was the ideal switch’s replacement. this actually happens in every circuit where I use the generateOptimizedModel command and there are any switches. the command works, and it lets me generate the HDL Coder-adapted system with no warnings, but I cannot use it if my system now behaves differently.
—
phew, that should be all.
this is genuinely extremely confusing to me, from the fact that some default examples work right out of the box and some don’t, to the fact that two systems that are exactly the same in quite literally everything except the fact they’re different files don’t produce the same result when running them through sschdladvisor. for anyone who might have the slightest idea to what’s going on, I would be eternally grateful if you could tell me what the problem can be. the only thing I can think of is that something might have broken in some update since 2022.hello, I’m having some really frustrating problems with Simscape and sschdladvisor.
there is going to be a lot of context up ahead, but I assure you it isn’t very dense at all.
—
initially, I tried following this document to generate HDL code, where they load the Full Wave Bridge Rectifier example. after following along and executing the workflow advisor tool, though, I’m met with the following warning at the very end (I renamed the simulink file to "fwbr"):
Warning
Run hdlsetup on the model ‘fwbr’ to modify configuration parameter values recommended for HDL code generation and rerun the workflow. Generated implementation model ‘gmStateSpaceHDL_fwbr’ with the ‘HDL settings’. The HDL Algorithm requires latency. Each output port experiences 1 additional delay.
but this is essentially an error, because it does not in fact generate the "gmStateSpaceHDL_fwbr" model. when I try opening it, I get the following error:
‘C:UsersCrisDocumentsMATLABssc_bcsschdlfwbrgmStateSpaceHDL_fwbr’ is not a valid Simulink object name and there is no file with that name.
there’s absolutely no configuration in the model nor in the Workflow Advisor I can use to make this warning go away.
I then run into the command sschdl.generateOptimizedModel, which was introduced in the R2024a version of MATLAB, which can replace all the Simscape components that might cause issues for HDL code generation into their dynamic block equivalent. after this and after making sure the generated optimized model is behaviourally identical, I can finally execute the Workflow Advisor with no problems.
—
after that, I try following along a different example, the Halfwave Rectifier model. this one executes flawlessly right off the bat and I get a dynamic system equivalent model out of the Workflow Advisor, for which I can then generate VHDL code with 0 issues.
—
I then try to make my own simscape system, a simple buck converter:
but I run into exactly the same issue as I did with the full wave bridge rectifier where it would throw that "warning" that wouldn’t let me actually generate the HDL coder adapted model. I then find this document with a buck converter model example, which executes flawlessly. this part in particular puzzles me, because in an attempt to find the problem with my own implementation I start moving parameters around both in the system and in the model settings themselves. eventually, I end up straight up copy-pasting the entire system into my own .slx file, and configure every single setting to be exactly the same as the example’s, and it still won’t let me generate the model by showing me that warning from before.
I tried applying the generateOptimizedModel command, but to my dismay it completely changed the behaviour of my circuit, and I could pinpoint that the one block causing the change in behaviour was the ideal switch’s replacement. this actually happens in every circuit where I use the generateOptimizedModel command and there are any switches. the command works, and it lets me generate the HDL Coder-adapted system with no warnings, but I cannot use it if my system now behaves differently.
—
phew, that should be all.
this is genuinely extremely confusing to me, from the fact that some default examples work right out of the box and some don’t, to the fact that two systems that are exactly the same in quite literally everything except the fact they’re different files don’t produce the same result when running them through sschdladvisor. for anyone who might have the slightest idea to what’s going on, I would be eternally grateful if you could tell me what the problem can be. the only thing I can think of is that something might have broken in some update since 2022. hello, I’m having some really frustrating problems with Simscape and sschdladvisor.
there is going to be a lot of context up ahead, but I assure you it isn’t very dense at all.
—
initially, I tried following this document to generate HDL code, where they load the Full Wave Bridge Rectifier example. after following along and executing the workflow advisor tool, though, I’m met with the following warning at the very end (I renamed the simulink file to "fwbr"):
Warning
Run hdlsetup on the model ‘fwbr’ to modify configuration parameter values recommended for HDL code generation and rerun the workflow. Generated implementation model ‘gmStateSpaceHDL_fwbr’ with the ‘HDL settings’. The HDL Algorithm requires latency. Each output port experiences 1 additional delay.
but this is essentially an error, because it does not in fact generate the "gmStateSpaceHDL_fwbr" model. when I try opening it, I get the following error:
‘C:UsersCrisDocumentsMATLABssc_bcsschdlfwbrgmStateSpaceHDL_fwbr’ is not a valid Simulink object name and there is no file with that name.
there’s absolutely no configuration in the model nor in the Workflow Advisor I can use to make this warning go away.
I then run into the command sschdl.generateOptimizedModel, which was introduced in the R2024a version of MATLAB, which can replace all the Simscape components that might cause issues for HDL code generation into their dynamic block equivalent. after this and after making sure the generated optimized model is behaviourally identical, I can finally execute the Workflow Advisor with no problems.
—
after that, I try following along a different example, the Halfwave Rectifier model. this one executes flawlessly right off the bat and I get a dynamic system equivalent model out of the Workflow Advisor, for which I can then generate VHDL code with 0 issues.
—
I then try to make my own simscape system, a simple buck converter:
but I run into exactly the same issue as I did with the full wave bridge rectifier where it would throw that "warning" that wouldn’t let me actually generate the HDL coder adapted model. I then find this document with a buck converter model example, which executes flawlessly. this part in particular puzzles me, because in an attempt to find the problem with my own implementation I start moving parameters around both in the system and in the model settings themselves. eventually, I end up straight up copy-pasting the entire system into my own .slx file, and configure every single setting to be exactly the same as the example’s, and it still won’t let me generate the model by showing me that warning from before.
I tried applying the generateOptimizedModel command, but to my dismay it completely changed the behaviour of my circuit, and I could pinpoint that the one block causing the change in behaviour was the ideal switch’s replacement. this actually happens in every circuit where I use the generateOptimizedModel command and there are any switches. the command works, and it lets me generate the HDL Coder-adapted system with no warnings, but I cannot use it if my system now behaves differently.
—
phew, that should be all.
this is genuinely extremely confusing to me, from the fact that some default examples work right out of the box and some don’t, to the fact that two systems that are exactly the same in quite literally everything except the fact they’re different files don’t produce the same result when running them through sschdladvisor. for anyone who might have the slightest idea to what’s going on, I would be eternally grateful if you could tell me what the problem can be. the only thing I can think of is that something might have broken in some update since 2022. fpga, simscape, hdl coder, sschdl MATLAB Answers — New Questions
can’t find Init button by double click the Init subsystem inside the Rx block
when I try to follow the example "Globally Adapt Receiver Components Using Pulse Response Metrics to Improve SerDes Performance"when I try to follow the example "Globally Adapt Receiver Components Using Pulse Response Metrics to Improve SerDes Performance" when I try to follow the example "Globally Adapt Receiver Components Using Pulse Response Metrics to Improve SerDes Performance" serdesdesigner, equalization, serdes MATLAB Answers — New Questions
The follow code was create to calculate the time to increase the temperature, but when I run it the result is infinite. Anyone can help me?
Below are the tow functions used to calculate the time to increase the temp. according to the inputs: L1, L2, L3 and heat+power. The initial values were: 0.05m; 0.1 m; 0.05m and 500W respectively. But with any other values the result returns the same: inifinite seconds! I need the results in terms of plotting.
function time_to_increase_temperature = calculate_time_to_increase_temperature( …
rho_concrete, rho_air, k_concrete, k_air, ~, cp_concrete, …
cp_air, T_initial, T_surface, L1, L2, L3, volume_P1_P3, ~, …
Nx, Nt, delta_T, heat_power)
% Calculate total thickness
total_thickness = L1 + L2 + L3;
% Thermal diffusivities
alpha_concrete = k_concrete / (rho_concrete * cp_concrete); % m²/s
alpha_air = k_air / (rho_air * cp_air); % m²/s
% Discretization parameters
dx = total_thickness / Nx; % Spatial step size
dt = 6 / Nt; % Time step size
% Preallocate temperature arrays
T = T_initial * ones(Nx, 1);
T_new = T;
% Define material properties at each point
len_P1 = round(Nx * L1 / total_thickness); % Length of concrete layer P1
len_P2 = round(Nx * L2 / total_thickness); % Length of air layer P2
len_P3 = Nx – len_P1 – len_P2; % Length of concrete layer P3
% Ensure len_P3 is correctly adjusted if rounding caused any issues
if len_P1 + len_P2 + len_P3 ~= Nx
len_P3 = Nx – len_P1 – len_P2;
end
% Preallocate material array
material = zeros(Nx, 1);
material(1:len_P1) = alpha_concrete;
material(len_P1+1:len_P1+len_P2) = alpha_air;
material(len_P1+len_P2+1:Nx) = alpha_concrete;
time_to_increase_temperature = inf; % Initialize to store time to increase temperature
% Calculate heat input per spatial point
heat_input_per_point = heat_power * dt / (rho_concrete * cp_concrete * volume_P1_P3 / Nx);
% Time integration using Finite Difference Method (FDM)
time = 0; % Initialize time
for n = 1:Nt
for i = 2:Nx-1
T_new(i) = T(i) + material(i) * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
end
% Boundary conditions
T_new(1) = T(1) + alpha_concrete * dt / dx^2 * (T(2) – T(1)) + heat_input_per_point * (T_surface – T(1));
T_new(Nx) = T(Nx-1);
% Update temperature
T = T_new;
time = time + dt;
% Check if the temperature at the right side of P3 reaches T_initial + delta_T
if T(Nx) >= T_initial + delta_T
time_to_increase_temperature = time;
break;
end
end
% Return the time to increase temperature by 1 K at the right side of P3
end
Function main_process:
function main_process()
% Parameters with fixed values
rho_concrete = 2500; % kg/m³
rho_air = 1293; % kg/m³
k_concrete = 1.35; % W/(m·K)
k_air = 0.024; % W/(m·K) assuming typical value for air
cp_concrete = 0.92 * 1000; % J/(kg·K)
cp_air = 1.005 * 1000; % J/(kg·K)
T_initial = 300; % Initial temperature in K
T_surface = 411; % Surface temperature in K
volume_P1_P3 = 0.00488; % Volume of each concrete plate in m³
Nx = 100; % Number of spatial points
Nt = 1000; % Number of time steps
delta_T = 1; % Temperature increase in K
% Prompt the user for specific input parameters
L1 = input(‘Enter the thickness of the first concrete layer (m): ‘);
L2 = input(‘Enter the thickness of the air layer (m): ‘);
L3 = input(‘Enter the thickness of the second concrete layer (m): ‘);
heat_power = input(‘Enter the heat power (W): ‘);
% Call the function
time_to_increase_temperature = calculate_time_to_increase_temperature( …
rho_concrete, rho_air, k_concrete, k_air, [], cp_concrete, …
cp_air, T_initial, T_surface, L1, L2, L3, volume_P1_P3, [], …
Nx, Nt, delta_T, heat_power);
% Display the result
fprintf(‘Time to increase temperature by 1 K at the right side of P3: %.2f secondsn’, time_to_increase_temperature);
% Plot the result
total_thickness = L1 + L2 + L3;
x = linspace(0, total_thickness, Nx); % Spatial points
y = linspace(0, time_to_increase_temperature, Nx); % Temporal points for plotting
plot(x, y, ‘DisplayName’, ‘Time to Increase Temperature by 1 K’);
xlabel(‘Position (m)’);
ylabel(‘Time (s)’);
legend(‘show’);
title(‘Time to Increase Temperature by 1 K at the right side of P3’);
endBelow are the tow functions used to calculate the time to increase the temp. according to the inputs: L1, L2, L3 and heat+power. The initial values were: 0.05m; 0.1 m; 0.05m and 500W respectively. But with any other values the result returns the same: inifinite seconds! I need the results in terms of plotting.
function time_to_increase_temperature = calculate_time_to_increase_temperature( …
rho_concrete, rho_air, k_concrete, k_air, ~, cp_concrete, …
cp_air, T_initial, T_surface, L1, L2, L3, volume_P1_P3, ~, …
Nx, Nt, delta_T, heat_power)
% Calculate total thickness
total_thickness = L1 + L2 + L3;
% Thermal diffusivities
alpha_concrete = k_concrete / (rho_concrete * cp_concrete); % m²/s
alpha_air = k_air / (rho_air * cp_air); % m²/s
% Discretization parameters
dx = total_thickness / Nx; % Spatial step size
dt = 6 / Nt; % Time step size
% Preallocate temperature arrays
T = T_initial * ones(Nx, 1);
T_new = T;
% Define material properties at each point
len_P1 = round(Nx * L1 / total_thickness); % Length of concrete layer P1
len_P2 = round(Nx * L2 / total_thickness); % Length of air layer P2
len_P3 = Nx – len_P1 – len_P2; % Length of concrete layer P3
% Ensure len_P3 is correctly adjusted if rounding caused any issues
if len_P1 + len_P2 + len_P3 ~= Nx
len_P3 = Nx – len_P1 – len_P2;
end
% Preallocate material array
material = zeros(Nx, 1);
material(1:len_P1) = alpha_concrete;
material(len_P1+1:len_P1+len_P2) = alpha_air;
material(len_P1+len_P2+1:Nx) = alpha_concrete;
time_to_increase_temperature = inf; % Initialize to store time to increase temperature
% Calculate heat input per spatial point
heat_input_per_point = heat_power * dt / (rho_concrete * cp_concrete * volume_P1_P3 / Nx);
% Time integration using Finite Difference Method (FDM)
time = 0; % Initialize time
for n = 1:Nt
for i = 2:Nx-1
T_new(i) = T(i) + material(i) * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
end
% Boundary conditions
T_new(1) = T(1) + alpha_concrete * dt / dx^2 * (T(2) – T(1)) + heat_input_per_point * (T_surface – T(1));
T_new(Nx) = T(Nx-1);
% Update temperature
T = T_new;
time = time + dt;
% Check if the temperature at the right side of P3 reaches T_initial + delta_T
if T(Nx) >= T_initial + delta_T
time_to_increase_temperature = time;
break;
end
end
% Return the time to increase temperature by 1 K at the right side of P3
end
Function main_process:
function main_process()
% Parameters with fixed values
rho_concrete = 2500; % kg/m³
rho_air = 1293; % kg/m³
k_concrete = 1.35; % W/(m·K)
k_air = 0.024; % W/(m·K) assuming typical value for air
cp_concrete = 0.92 * 1000; % J/(kg·K)
cp_air = 1.005 * 1000; % J/(kg·K)
T_initial = 300; % Initial temperature in K
T_surface = 411; % Surface temperature in K
volume_P1_P3 = 0.00488; % Volume of each concrete plate in m³
Nx = 100; % Number of spatial points
Nt = 1000; % Number of time steps
delta_T = 1; % Temperature increase in K
% Prompt the user for specific input parameters
L1 = input(‘Enter the thickness of the first concrete layer (m): ‘);
L2 = input(‘Enter the thickness of the air layer (m): ‘);
L3 = input(‘Enter the thickness of the second concrete layer (m): ‘);
heat_power = input(‘Enter the heat power (W): ‘);
% Call the function
time_to_increase_temperature = calculate_time_to_increase_temperature( …
rho_concrete, rho_air, k_concrete, k_air, [], cp_concrete, …
cp_air, T_initial, T_surface, L1, L2, L3, volume_P1_P3, [], …
Nx, Nt, delta_T, heat_power);
% Display the result
fprintf(‘Time to increase temperature by 1 K at the right side of P3: %.2f secondsn’, time_to_increase_temperature);
% Plot the result
total_thickness = L1 + L2 + L3;
x = linspace(0, total_thickness, Nx); % Spatial points
y = linspace(0, time_to_increase_temperature, Nx); % Temporal points for plotting
plot(x, y, ‘DisplayName’, ‘Time to Increase Temperature by 1 K’);
xlabel(‘Position (m)’);
ylabel(‘Time (s)’);
legend(‘show’);
title(‘Time to Increase Temperature by 1 K at the right side of P3’);
end Below are the tow functions used to calculate the time to increase the temp. according to the inputs: L1, L2, L3 and heat+power. The initial values were: 0.05m; 0.1 m; 0.05m and 500W respectively. But with any other values the result returns the same: inifinite seconds! I need the results in terms of plotting.
function time_to_increase_temperature = calculate_time_to_increase_temperature( …
rho_concrete, rho_air, k_concrete, k_air, ~, cp_concrete, …
cp_air, T_initial, T_surface, L1, L2, L3, volume_P1_P3, ~, …
Nx, Nt, delta_T, heat_power)
% Calculate total thickness
total_thickness = L1 + L2 + L3;
% Thermal diffusivities
alpha_concrete = k_concrete / (rho_concrete * cp_concrete); % m²/s
alpha_air = k_air / (rho_air * cp_air); % m²/s
% Discretization parameters
dx = total_thickness / Nx; % Spatial step size
dt = 6 / Nt; % Time step size
% Preallocate temperature arrays
T = T_initial * ones(Nx, 1);
T_new = T;
% Define material properties at each point
len_P1 = round(Nx * L1 / total_thickness); % Length of concrete layer P1
len_P2 = round(Nx * L2 / total_thickness); % Length of air layer P2
len_P3 = Nx – len_P1 – len_P2; % Length of concrete layer P3
% Ensure len_P3 is correctly adjusted if rounding caused any issues
if len_P1 + len_P2 + len_P3 ~= Nx
len_P3 = Nx – len_P1 – len_P2;
end
% Preallocate material array
material = zeros(Nx, 1);
material(1:len_P1) = alpha_concrete;
material(len_P1+1:len_P1+len_P2) = alpha_air;
material(len_P1+len_P2+1:Nx) = alpha_concrete;
time_to_increase_temperature = inf; % Initialize to store time to increase temperature
% Calculate heat input per spatial point
heat_input_per_point = heat_power * dt / (rho_concrete * cp_concrete * volume_P1_P3 / Nx);
% Time integration using Finite Difference Method (FDM)
time = 0; % Initialize time
for n = 1:Nt
for i = 2:Nx-1
T_new(i) = T(i) + material(i) * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
end
% Boundary conditions
T_new(1) = T(1) + alpha_concrete * dt / dx^2 * (T(2) – T(1)) + heat_input_per_point * (T_surface – T(1));
T_new(Nx) = T(Nx-1);
% Update temperature
T = T_new;
time = time + dt;
% Check if the temperature at the right side of P3 reaches T_initial + delta_T
if T(Nx) >= T_initial + delta_T
time_to_increase_temperature = time;
break;
end
end
% Return the time to increase temperature by 1 K at the right side of P3
end
Function main_process:
function main_process()
% Parameters with fixed values
rho_concrete = 2500; % kg/m³
rho_air = 1293; % kg/m³
k_concrete = 1.35; % W/(m·K)
k_air = 0.024; % W/(m·K) assuming typical value for air
cp_concrete = 0.92 * 1000; % J/(kg·K)
cp_air = 1.005 * 1000; % J/(kg·K)
T_initial = 300; % Initial temperature in K
T_surface = 411; % Surface temperature in K
volume_P1_P3 = 0.00488; % Volume of each concrete plate in m³
Nx = 100; % Number of spatial points
Nt = 1000; % Number of time steps
delta_T = 1; % Temperature increase in K
% Prompt the user for specific input parameters
L1 = input(‘Enter the thickness of the first concrete layer (m): ‘);
L2 = input(‘Enter the thickness of the air layer (m): ‘);
L3 = input(‘Enter the thickness of the second concrete layer (m): ‘);
heat_power = input(‘Enter the heat power (W): ‘);
% Call the function
time_to_increase_temperature = calculate_time_to_increase_temperature( …
rho_concrete, rho_air, k_concrete, k_air, [], cp_concrete, …
cp_air, T_initial, T_surface, L1, L2, L3, volume_P1_P3, [], …
Nx, Nt, delta_T, heat_power);
% Display the result
fprintf(‘Time to increase temperature by 1 K at the right side of P3: %.2f secondsn’, time_to_increase_temperature);
% Plot the result
total_thickness = L1 + L2 + L3;
x = linspace(0, total_thickness, Nx); % Spatial points
y = linspace(0, time_to_increase_temperature, Nx); % Temporal points for plotting
plot(x, y, ‘DisplayName’, ‘Time to Increase Temperature by 1 K’);
xlabel(‘Position (m)’);
ylabel(‘Time (s)’);
legend(‘show’);
title(‘Time to Increase Temperature by 1 K at the right side of P3’);
end solving issue, unknown error, break linkage MATLAB Answers — New Questions