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-   -   How to define a plane with heat flux? (https://www.cfd-online.com/Forums/openfoam-solving/219234-how-define-plane-heat-flux.html)

shuailiao July 20, 2019 12:21

How to define a plane with heat flux?
 
I am using buoyantBuossineqPimpleFoam to simulate natural ventilation (convection). Basically two heat source (plane with no thickness) create heat and drive the internal air to go up.
So how to define a plane with heatflux rather than temperature?
In addition, anyone know what boundary conditions should be assigned to inlet and outlet so flow only suck in from outside to inlet and flow going out from outlet?


Thank you!

yambanshee July 23, 2019 05:55

Quote:

Originally Posted by shuailiao (Post 739505)
I am using buoyantBuossineqPimpleFoam to simulate natural ventilation (convection). Basically two heat source (plane with no thickness) create heat and drive the internal air to go up.
So how to define a plane with heatflux rather than temperature?
In addition, anyone know what boundary conditions should be assigned to inlet and outlet so flow only suck in from outside to inlet and flow going out from outlet?


Thank you!

For heatflux, you'll want to specify a temperature gradient. If I remember correctly q = k * dT, so dT = q/k

For in/out flow boundary conditions boundary conditions look at the boundary conditions:
inletOutlet
outletInlt
pressureDirectedInletOutletVelocity
etc


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