Mean velocity characteristics of plane diffuser flows with inlet velocity distortion

V CHIDAMBARAN, P A ASWATHA NARAYANA, N V CHANDRASEKHARA SWAMY

Abstract


Characteristics of flow in a straight two-dimensional diffuser with distorted inlet velocity profiles are presented. The distortion is generated by placing a symmetrical airfoil in the approaching flow at incidence to the flow direction. Static pressure recovery is less for smaller angles of incidence while it is high for larger angles when compared with uniform inlet velocity distribution. The boundary layers and wake do not exhibit equilibrium characteristics.

Keywords


Two-dimensional diffuser; inlet velocity distortion; static pressure recovery; boundary layer; wake.

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