Hello , I want to simulate the following partial equation on simulink , but I dont know if what I already built is fine , I have some struggle with dc/dz ,because it gives me error when I try to build it , so I conected rate transition and discrete derivative ,but dont know it is ok . I am building a fixed bed reactor full loaded with carbon absorbed gold in which a cyanide flow is pumped into and absorbs the gold loading , depleting the carbon . Following the equations:

So i tried finite differences for dc/dz with forward difference for eactor entry , central along the reactor , and backward in the exit, and dc/dt and dq/dt use integrator blocks, I consider Co= 0 and q0=4320. The problem is that when I remove rate transition and discrete derivative in 4th reactor,gives error.
Being that said, is correct to represent dc/dz as following? :
Adjoint the simulink file down here and thanks in advance:
https://riveril123.quickconnect.to/d/s/11jhifsXc7WjjbgDgYlqicG8JX9cxHGm/1KbHfeBHUy1vF0hiTKBsPaD8Nff4HGwg-27UAduxX-QsHello , I want to simulate the following partial equation on simulink , but I dont know if what I already built is fine , I have some struggle with dc/dz ,because it gives me error when I try to build it , so I conected rate transition and discrete derivative ,but dont know it is ok . I am building a fixed bed reactor full loaded with carbon absorbed gold in which a cyanide flow is pumped into and absorbs the gold loading , depleting the carbon . Following the equations:

So i tried finite differences for dc/dz with forward difference for eactor entry , central along the reactor , and backward in the exit, and dc/dt and dq/dt use integrator blocks, I consider Co= 0 and q0=4320. The problem is that when I remove rate transition and discrete derivative in 4th reactor,gives error.
Being that said, is correct to represent dc/dz as following? :
Adjoint the simulink file down here and thanks in advance:
https://riveril123.quickconnect.to/d/s/11jhifsXc7WjjbgDgYlqicG8JX9cxHGm/1KbHfeBHUy1vF0hiTKBsPaD8Nff4HGwg-27UAduxX-Qs Hello , I want to simulate the following partial equation on simulink , but I dont know if what I already built is fine , I have some struggle with dc/dz ,because it gives me error when I try to build it , so I conected rate transition and discrete derivative ,but dont know it is ok . I am building a fixed bed reactor full loaded with carbon absorbed gold in which a cyanide flow is pumped into and absorbs the gold loading , depleting the carbon . Following the equations:

So i tried finite differences for dc/dz with forward difference for eactor entry , central along the reactor , and backward in the exit, and dc/dt and dq/dt use integrator blocks, I consider Co= 0 and q0=4320. The problem is that when I remove rate transition and discrete derivative in 4th reactor,gives error.
Being that said, is correct to represent dc/dz as following? :
Adjoint the simulink file down here and thanks in advance:
https://riveril123.quickconnect.to/d/s/11jhifsXc7WjjbgDgYlqicG8JX9cxHGm/1KbHfeBHUy1vF0hiTKBsPaD8Nff4HGwg-27UAduxX-Qs simulink, reactor, partial differential equation MATLAB Answers — New Questions

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