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non-uniform initial temperature distribution

Posted Feb 22, 2017, 4:25 a.m. EST Heat Transfer & Phase Change, Geometry, Materials Version 5.2 1 Reply

Nick Verhoeven
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Hi all,

I am trying in a 2D model get a non uniform initial temperature distribution. I have made an analytic function, like T = 1000*e^(-4x)

I think I have to set 'x' first, but I don't know how to do it.

Can anybody help me to achieve this?

Thanks!!
1 Reply Last Post Feb 22, 2017, 6:28 a.m. EST
Luigi Candido
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Posted: 7 years ago Feb 22, 2017, 6:28 a.m. EST
Comsol should know a priori the spatial coordinates, hence you have not to define x.
I suggest you to create a piecewise function (pw1) where you specify where x is supposed to vary, and then you can set a Temperature boundary where T=pw1(x).
Comsol should know a priori the spatial coordinates, hence you have not to define x. I suggest you to create a piecewise function (pw1) where you specify where x is supposed to vary, and then you can set a Temperature boundary where T=pw1(x).

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