Two-dimensional compressible flow analysis in cascades of airfoils based on a two-equation turbulence model. 2nd report Investigation on flow prediction.

Abstract

A new numerical technique for the analysis of the two dimensional compressible turbulent flow in axial flow turbomachinery, in which a two-equation turbulence model was employed, was presented in the first report. In this paper, the effect of the artificial viscosity, grid refinement and boundary condition of turbulent energy on the resultant solution are discussed in comparison with experimental results (surface pressure distribution, exit flow angle, kinetic energy loss coefficient). It is shown that the present method gives encouraging results for estimating energy loss in cascade flow.