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Interpolated variable as initial value for time dependent eqn
Posted 22 feb 2011, 12:18 GMT-5 Heat Transfer & Phase Change Version 4.1 2 Replies
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Hello,
I'm modeling a physical problem using stationary joule effect and time dependent PDE. I would like to use the solutions obtained from this two physics and plug it in order to use them as initial condition. I exported the variables, with the report fuction, I re-imported these data using interpolation, and I used them like the new initial codition in my 3D geometry. Unfortunately it seems that this initial condition make my time depedent solution to freeze at the inital value. I cannot understand the error? Any idea?
Thank you in advance, Stefano
I'm modeling a physical problem using stationary joule effect and time dependent PDE. I would like to use the solutions obtained from this two physics and plug it in order to use them as initial condition. I exported the variables, with the report fuction, I re-imported these data using interpolation, and I used them like the new initial codition in my 3D geometry. Unfortunately it seems that this initial condition make my time depedent solution to freeze at the inital value. I cannot understand the error? Any idea?
Thank you in advance, Stefano
2 Replies Last Post 25 feb 2011, 04:03 GMT-5
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Posted:
1 decade ago
Hi
I'm not sure I understand your sequence there. But can you not run the first simulation, add a store solution (manually) and then add your time dependent study with a starting Initial conditions from the stored solution ?
But I might have missed something when you relate to interpolated results
--
Good luck
Ivar
I'm not sure I understand your sequence there. But can you not run the first simulation, add a store solution (manually) and then add your time dependent study with a starting Initial conditions from the stored solution ?
But I might have missed something when you relate to interpolated results
--
Good luck
Ivar
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Posted:
1 decade ago
Thank you Ivar, I'm doing what you have suggested and it works well.
Apart from that what I would like to do is the following: I would like to solve the problem with a certain initial condition for the variable which the time dependent study solves for, and that I would like to use the solution I obtained as the inital condition for the time dependent study, in order to see if the problems reverses back or not.
Futhermore I added a parametric sweep that affect one parameter of the stationary solver and it works fine, but I think that every time the solvers compute the stationary and time dependent equation for one value of the parameter and that start again regalling the initial condition, I don't like that because I like the system to evolve from the values computed with the last parameter. Is it possible? Help and guides seems to me a little confusing.
-----
Scheme of the simulation:
Stationary -> variables u1 and u2
Time dependent -> recive in input u1 and u2 and solve for u3 with certain inital condition on u3
Thank you very much for your consideration, Stefano Larentis
Apart from that what I would like to do is the following: I would like to solve the problem with a certain initial condition for the variable which the time dependent study solves for, and that I would like to use the solution I obtained as the inital condition for the time dependent study, in order to see if the problems reverses back or not.
Futhermore I added a parametric sweep that affect one parameter of the stationary solver and it works fine, but I think that every time the solvers compute the stationary and time dependent equation for one value of the parameter and that start again regalling the initial condition, I don't like that because I like the system to evolve from the values computed with the last parameter. Is it possible? Help and guides seems to me a little confusing.
-----
Scheme of the simulation:
Stationary -> variables u1 and u2
Time dependent -> recive in input u1 and u2 and solve for u3 with certain inital condition on u3
Thank you very much for your consideration, Stefano Larentis