A Parametric Computation of Flows and Performance of Rotating Radial Diffusers

摘要

A finite-difference procedure is employed to predict the three-dimensional turbulent flow in a rotating radial impeller. The flows are treated as 'partially parabolic' and the turbulence phenomena are represented by a two-equation turbulence model involving the solution of two differential equations, one for the kinetic energy of turbulence and the other for its dissipation rate. Parametric computations have been performed to study:n(a) the effect of rotation on the three-dimensional flow pattern;n(b) the effect of geometrical and flow parameters on the performance of the impeller.