Aerodynamic behaviour of a linear subsonic compressor cascade in a droplet laden flow

Abstract

In the present investigation a computational study of droplet laden flow in a linear compressor cascade has been carried out. Simulations have been carried out at different incidence angles in order to understand the effect of water droplets in the separated flow regions. The study reveals significant flow modifications in the separated flow region by the presence of water droplets and the total loss coefficient reduces at the downstream side of the compressor significantly at positive incidence angles. Particular emphasis has been given to study the effect of water injection on the blade loading and analyze pressure distribution over the blade at negative and positive incidence angles. It has been noted that pressure distribution over blade is almost uniform at higher incidence angles. At smaller incidence angles the blade suction side pressure values are non-uniform in the axial direction due to the increased droplet wall interactions. As a result, the pressure contours are highly non-uniform in the suction surface. On the contrary at higher incidence angles a smoother pressure contours are observed at the suction side. � 2018 by the authors of the abstracts.