about the natural convecton.

w.z.h

how to specify the pressure value in the pressureinlet and outlet B.C? the pressureinlet and pressureoutlet boundary setup seems puzzling when i look at the FLUENT documentaton: "The boundary pressures that you input at pressure inlet and outlet boundaries are the redefined pressures as given by Equation 11.5.6. In general you should input equal pressures, p', at the inlet and exit boundaries of your FLUENT model if there are no externally-imposed pressure gradients" "This form of the body-force term follows from the redefinition of pressure in FLUENT as p' s = ps - pgx (11.5.6) The hydrostatic pressure in a fluid at rest is then p' s = 0 "