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Use the solution of one model for another

Posted Oct 31, 2011, 6:05 p.m. EDT Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 4.0 2 Replies

Jan Kumpfer
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Hey everybody,
I'm running into a problem that should be fairly easy to solve but I just can't find out how.
I'm using the PDE solver to solve the GC pde to find the potential (charge) distribution for double layer in a particial geometry.
So far so good. Now I would like to use the resulting charge distribution(uxx + uyy, its a 2D model) and use some other physic (e.g. electrostatics) in the same geometry with it. How can i do that?

Thanks for any suggetstion!

Jan
2 Replies Last Post Dec 31, 2011, 6:41 a.m. EST
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Hello Jan Kumpfer

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Mohit Singhal
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Posted: 1 decade ago Dec 31, 2011, 6:02 a.m. EST
I am having the same problem !!


Any suggestions, Ivar ?

Please help.
I am having the same problem !! Any suggestions, Ivar ? Please help.
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Dec 31, 2011, 6:41 a.m. EST
Hi
well I'm hopefully not the onlyone that might answer ;)
I'm not sure I get fully the question, but if you solve a model once you have all results in the related data set, you can store the data ans chain directly another soving sequence, and in the solver node you can define which physics solves where, and for example that your initial conditions for solver2 is read from the stored solution 1 and not being the default all "0". But you can also access directly "mod1.whateverACDCphysics.uxx" in your other physics to use a result explicitely in an expression.

Now v4.0 was not really ironed out, so I'm not sure how this old version behaves with multiple solutions, if I remember right you need to define the steps manually in the solver.

--
Good luck
Ivar
Hi well I'm hopefully not the onlyone that might answer ;) I'm not sure I get fully the question, but if you solve a model once you have all results in the related data set, you can store the data ans chain directly another soving sequence, and in the solver node you can define which physics solves where, and for example that your initial conditions for solver2 is read from the stored solution 1 and not being the default all "0". But you can also access directly "mod1.whateverACDCphysics.uxx" in your other physics to use a result explicitely in an expression. Now v4.0 was not really ironed out, so I'm not sure how this old version behaves with multiple solutions, if I remember right you need to define the steps manually in the solver. -- Good luck Ivar

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