Excess of internal field of a specific cell -- CFD Online Discussion Forums

December 7, 2021, 03:47	Excess of internal field of a specific cell	#1
Niazi New Member Usama Niaz Join Date: Oct 2019 Location: Pakistan Posts: 7 Rep Power: 6	Hi Foamers, I am new to OpenFOAM programming, I currently implementing a new boundary condition, in which velocity will be initiated on the patch, using pressure difference. I want to pressure the difference between a patch and an individual cell. For that purpose, I need to extract the pressure of the cell. But I don't know how? I want it to update as the pressure of that cell changes. Can anyone help me with that? The equation I am using is, sqrt(2(P_patch - P_cell)/rho). I come up to DimensionedField<Type, volMesh>& internalField function to access that. Furthermore, can you help me with "this->" pointer why does it use? Thanks

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