I am currently working on an aerodynamics project that requires the use of suction to prevent flow separation. If I have the mass flow rate and the velocity of the air, assuming the air is compressible, how do I determine the pressure value that can induce suction ?
Ingo Riess
You have a system consisting of one or multiple inlet nozzle(s), flow channels/ducts, a fan/pump and a discharge opening. And probably you have a static pressure difference between the suction side and the pressure side of your system. Then, you calculate flow losses through you system. This gives you the required fan/pump pressure. In order to estimate individual loss contributions, you may have to look up loss coefficients from literature, such as Idelchic or Miller.
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