Perfect adiabatic boundary condition
Hi openFoamers,
Does anyone have any idea how a perfect adiabatic boundary condition (zero net flux of convection and radiation) can be implemented in openFOAM? I am using chtMultiregionSimpleFOAM solver. |
Hi Hossein
For convection part, you have to set in 0/Folder, solid part: { type fixedGradient; gradient uniform 0; } In constant folder for radiation part, fluid region/ radiationProperties file radiation off; radiationModel none; |
Hi Nabeel,
Thank you for your answer. The fixedGradient b.c doesn't do what I want (zero net flux), since we have the contribution of radiation! Basically we need the radiation, so it can not be also turned off! I implemented a boundary condition using the heat balance at the boundary and defining an adiabatic surface temperature based on analytical solution! Thank you by the way :) |
Simpler way!
Using externalWallHeatFluxTemperature, mode -> power or flux, q or Q -> 0! This way the heat balance equation will be set to zero. |
Quote:
I never use it.. It's good chance to have a look... Thanks for the sharing Best Regards Nabeel |
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