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Ansys Learning Forum Forums Discuss Simulation Fluids UDF for mass-flow-inlet Reply To: UDF for mass-flow-inlet

Rob
Forum Moderator

Boundary conditions are used for a surface effect, ie an inlet/outlet/wall and the like. If you need to add (or remove) material from a cell zone (volume effect) then you need a source term. What effect are you trying to replicate? Have you done some/most of the tutorials as those will give you a good idea of how the solver works.Â