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Heat Flux in the Near-Wall Region

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Old   April 16, 2007, 12:34
Default Heat Flux in the Near-Wall Region
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Malcolm
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Does CFX have a 'switch' to activate the Heat Flux in the Near-Wall Region or do you have to code the equations described in the solver theory yourself?

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Old   April 16, 2007, 17:19
Default Re: Heat Flux in the Near-Wall Region
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Opaque
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Dear Malcom,

Are you referring to the turbulent wall function boundary condition closure for the energy equation?

The equations are already in the code, and are active when you select a turbulence model.

Why do you think that you should code the equations separately?

Opaque.

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Old   April 16, 2007, 18:12
Default Re: Heat Flux in the Near-Wall Region
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Malcolm
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I'm referring to equation 187 of the CFX-Solver 10.0 Theory where qwall = ((rho x Cp x u*) / (T+)) x (Twall - Tfluid), i.e. the wall heat flux model that approximates a heat transfer coefficient.

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Old   April 16, 2007, 18:22
Default Re: Heat Flux in the Near-Wall Region
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Glenn Horrocks
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Hi,

That equation is automatically used when you select a simulation with a thermal field and a wall boundary condition which will result in heat transfer (ie not adiabatic).

Glenn Horrocks
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