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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Calling variable or convert T(x,y,z) = >T(x,y,t) between models

Posted 2013年2月18日 GMT-5 15:23 Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Geometry, Materials, Parameters, Variables, & Functions, Studies & Solvers Version 4.3, Version 4.3a 4 Replies

Rogelio Fontana
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Hi: Please help! I'm very stuck with a quite straightforward problem.

I've got two models:

1) Model 1: 3D Heat Transfer Stationary
2) Model 2: 2D Teat Transfer Time Dependent.

How can I call T(x,y,z) from the model 1 to T(x,y,t) in the model 2 If I want, for example, a source temporal variable Q(x,y,t) with the same shape. i.e. Q(x,y,t)=10*T(x,y,z=t)? The problem is how to change the z axis for the "t" temporal coordinate. How to input a source like this?

Thanks in advance.

4 Replies Last Post 2013年2月22日 GMT-5 13:17
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2013年2月20日 GMT-5 02:41
Hi

I have only 4.3a so here is a model, check carefully the linear extrusion definition on mod1, and the solver initial conditions of study 2

--
Good luck
Ivar
Hi I have only 4.3a so here is a model, check carefully the linear extrusion definition on mod1, and the solver initial conditions of study 2 -- Good luck Ivar
Rogelio Fontana
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Posted: 1 decade ago 2013年2月22日 GMT-5 09:58
Thank you Ivar! But I've got the 4.3 version. Can you upload some pictures of how is the model set? Specially how to set the source with the extrusion operator and when replacing the z coordinate for the t coordinate.

Thanks again!
Thank you Ivar! But I've got the 4.3 version. Can you upload some pictures of how is the model set? Specially how to set the source with the extrusion operator and when replacing the z coordinate for the t coordinate. Thanks again!
Rogelio Fontana
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Posted: 1 decade ago 2013年2月22日 GMT-5 11:00
Hi Ivar, another question. If the model 2 gemoetry is 2d, why there are points 1, 3 and 5 in the extrusion for gemoetry 2? Geometry 2 must be a flat square, and there are only 4 points.
Hi Ivar, another question. If the model 2 gemoetry is 2d, why there are points 1, 3 and 5 in the extrusion for gemoetry 2? Geometry 2 must be a flat square, and there are only 4 points.
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2013年2月22日 GMT-5 13:17
Hi

in 2D you define the origine, the X direction and a Y direction, for source and destination (you fill in the 4th point if you do a 3D mapping

--
Good luck
Ivar
Hi in 2D you define the origine, the X direction and a Y direction, for source and destination (you fill in the 4th point if you do a 3D mapping -- Good luck Ivar

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