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How to integrate normal flux in PDE mode?

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With the "Heat transfer module" it is easy to calculate the flux
along a boundary.

The same should be possible in PDE mode,
to calculate a heatflux q=kn*grad(T)
but how to do that?

q=k*(nx*Tx+ny*Ty)
For a 2D problem?

(using ver. 3.5a)

1 Reply Last Post May 24, 2010, 4:00 a.m. EDT

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Posted: 1 decade ago May 24, 2010, 4:00 a.m. EDT
Just simply go to the Post Processing menu and select the submenu item 'Boundary integration'. Type the flux formula k*(Tx*nx+Ty*ny) in the expression field and select the required boundary number and click 'apply' button. The answer will be displayed in the message panel. That's it.
Just simply go to the Post Processing menu and select the submenu item 'Boundary integration'. Type the flux formula k*(Tx*nx+Ty*ny) in the expression field and select the required boundary number and click 'apply' button. The answer will be displayed in the message panel. That's it.

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