Fixed convective heat transfer coefficient

[Tao]

Hello everyone,

I am curious about how FDS solves the wall surface temperature if I fix the convective heat transfer coefficient at the wall surface as a constant and turn off the radiation to the wall. 

The code I used for fixing hc is 

HEAT_TRANSFER_COEFFICIENT="constant"

And the way to turn off the radiation at the wall is

EMISSIVITY=0

Kind responses will be much appreciated.

Regards

Tao

[dr_jfloyd]

The same way it does if you didn't specify a fixed heat transfer coefficient. Specifying a fixed h just means FDS doesn't compute an h using the correlations given in the Guides, the rest of the calcuation at the wall does not change.  If your thermal boundary condition is fixed temperature (TMP_FRONT), it will still be that fixed temperature. If you have specified a heat flux, FDS will still compute the wall temperature needed to give that heat flux. If you have specified a MATL, FDS will still solve the 1D heat conduction equation.

[Tao Deng]

Thanks a lot, now I understand it.

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