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Fluent BC on Vacuum Pressure Outlet

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Old   October 1, 2019, 01:19
Default Fluent BC on Vacuum Pressure Outlet
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I am currently doing simulation on an automotive air intake system. I am using a pressure based solver, with mass flow inlet and pressure outlet. The air intake system is connected to the engine, however I am only running the simulation on the air intake system, which I want my outlet to be a vacuum. May I know how do I do so ?

For my boundary conditions, I have set my mass flow inlet to have 0.0678 kg/s and 0 Initial Gauge Pressure. For my outlet, what should I set ?

Thanks in advanced.
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air intake system, boundary conditions, pressure outlet, vacuum

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