Temperature Boundary Condition for Simulating Buoyancy-Driven ABL -- CFD Online Discussion Forums

March 2, 2020, 07:30	Temperature Boundary Condition for Simulating Buoyancy-Driven ABL	#1
Sereff Member Sereff Join Date: Jan 2019 Posts: 49 Rep Power: 7	Hi FOAMers, I intented to set a case to simulate a non-neutral ABL but I ran into a problem setting up the BC for the top boundary. Applying zeroGradient is not really a choice since in that case, due to the domain being periodic, the heat would accumulate over time and the entire domain would keep evolving towards a mixed neutral state. It would be much appreciated if anyone can share some ideas or give a hint on what kind of openFOAM boundary condition is suitable for this application, or should I seek for customizing the source code? Kind regards, Sereff

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