Hi,
I am working on a conjugate heat transfer problem. By t=20s, the system reaches steady state. Then I would like to see the system response after t=20s, using step function to switch off a source after t=20s.
The time step, I use is 0.5s.
However, whenever I use time dependent solver, I could see the step function switches off somewhere around 19.0 s itself, which actually should not be the case (This is noticed this through the change in solution after 19s).
But, this issue is not there in the case of time-discrete solver, where the source is perfectly switched off only after 20s. (solution remains same upto 20s)
I would like to know what precisely is the difference between time-dependent and time-discrete models?
I am working on a conjugate heat transfer problem. By t=20s, the system reaches steady state. Then I would like to see the system response after t=20s, using step function to switch off a source after t=20s.
The time step, I use is 0.5s.
However, whenever I use time dependent solver, I could see the step function switches off somewhere around 19.0 s itself, which actually should not be the case (This is noticed this through the change in solution after 19s).
But, this issue is not there in the case of time-discrete solver, where the source is perfectly switched off only after 20s. (solution remains same upto 20s)
I would like to know what precisely is the difference between time-dependent and time-discrete models?