Abstract
Behavior of uniform shear flow in rectangular parallel-walled diffusers and its effects on the diffuser performance were investigated both experimentally and theoretically. Velocity and static pressure distributions were measured varying the total divergence angle from 0 deg to 20 deg and the free stream velocity gradient at the inlet of the diffuser from 01/sec to 10001/sec. It became clear that a decay of velocity profile nonuniformity occurred and it affected the static pressure distribution seriously. Inviscid analysis was also performed, but its results did not always agree with experiment because of turbulence.
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