Turbulence Characteristics in the Near Wake of a Compressor Rotor Blade

This paper is concerned with the turbulence properties in the near wake of a rotating compressor blade. The variation of the axial, tangential and radial intensities as well as stresses across the wake and its decay characteristics were measured with a triaxial hot wire probe rotating with the rotor downstream of an axial flow compressor. The turbulence intensities decay very rapidly in the near wake region. The radial component of intensity is found to be higher than the tangential and axial components. This is a consequence of the effect of rotation on the turbulence structure. A qualitative analysis is carried out to predict the effect of rotation on the turbulence structure. These are in general agreement with the measured data.