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outflow bc-unrealistic pressure field (no backflow occours, incompressible fluid) |
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March 18, 2016, 21:40 |
outflow bc-unrealistic pressure field (no backflow occours, incompressible fluid)
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New Member
Austin
Join Date: Mar 2016
Posts: 2
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Hi fluent users,
i want to simulate the pressure loss of a structured channel. For this case i would consider some kind of Neumann-boundary condition at the outlet. So i choosed in fluent following set-up: velocity-inlet (pressure 400 000Pa, v=..., T=..., turbulence parameters...) outflow-bc (flow rate weighting=1) besides: Incompressible fluid No backflow at outlet-region The pressure field in the domain is quite unreasonable, the static pressure on the outlet is about -124Pa, the total pressure about -55Pa! (There are large vortices in the domain, but at the outlet the flow is fully developed.) Whats wrong? i really would appreciate your suggestions! |
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Tags |
neumann, outflow, outflow bc, pressure field, pressure loss |
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