Matrix coefficients from boundary conditions how -- CFD Online Discussion Forums

January 12, 2007, 05:58	Hello, I am trying to under	#1
tehache Senior Member Thomas Jung Join Date: Mar 2009 Posts: 102 Rep Power: 17	Hello, I am trying to understand implementation of boundary conditions... Simple question: Why is e.g. when using a fixedGradientFvPatchField gradient(internal/boundary)Coeffs called, but not value(Internal/Boundary)Coeffs ? If I want to implement an implicit b.c. (flux depending on current value), how can I make Foam to call valueInternalCoefficients? Deriving from a different FvPatchField? Thank you very much for any hint !

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