Abstract:

Numerical simulation of viscous flows through multistage transonic fans was carried out. Three dimensional Navier-Stokes equations were solved. The accuracy was improved with a high-resolution scheme. And the convergence was speeded up by the use of LU-SGS implicit method. The computed results for a highly loaded two-stage fan at design and off-design conditions were given in detail. The simulation results show good agreement with experiment data.

Key words: mult istage fan, thr ee-dimensional flow, N-S equat ions, high-r esolution scheme, implicit method, numer ical analysis