Can we apply nonlinear temperature gradient along the depth of a member using the COMSOL's beam interface?

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03 April 2015 2,734 6 View

How can nonlinear temperature gradient be applied using the COMSOL beam interface?

I tried to apply nonlinear temperature gradient using the beam interface of COMSOL, however, COMSOL always considers the temperatures of the top and bottom surfaces to calculate linear gradient...

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Xinyou Ke

I think you can do it through adding PDE interface

Sallal R. Abid

Dear Xinyou,

You are right, i think so, but i'm not used with PDE interface of COMSOL and doing so requires some time. I tried to apply the nonlinear gradient as an equation that i defined in the global definitions, But COMSOL considers the temperature of the top and bottom surfaces to calculate and apply the linear gradient.

Thanks and Regards

Maatoug Mohamed Ali

My be these exemples will help you

Thanks Maatoug,

The attached examples are for the heat transfer module...the beam module is a solid mechanic one....i.e. the degree of freedoms of the beam module are the dispacement field components (u, v, w), while it is the temperature (T) in the heat transfer module.

I worked on the KP-BBM water waves equation in two directions and I have used comsol to verify the results obtained by Matlab using the finite difference method. I send you a scanned document and I hope that he will help you.

What i'm looking for is how to apply a nonlinear temperature gradient on a concrete girder using the beam interface of COMSOL.