Viscous Analysis of Three-Dimensional Rotor Flow Using a Multigrid Method

[+] Author and Article Information
A. Arnone

Department of Energy Engineering, University of Florence, Florence, Italy

J. Turbomach 116(3), 435-445 (Jul 01, 1994) (11 pages) doi:10.1115/1.2929430 History: Received February 12, 1993; Online June 09, 2008


A three-dimensional code for rotating blade-row flow analysis has been developed. The space discretization uses a cell-centered scheme with eigenvalue scaling for the artificial dissipation. The computational efficiency of a four-stage Runge–Kutta scheme is enhanced by using variable coefficients, implicit residual smoothing, and a full-multigrid method. An application is presented for the NASA rotor 67 transonic fan. Due to the blade stagger and twist, a zonal, nonperiodic H-type grid is used to minimize the mesh skewness. The calculation is validated by comparing it with experiments in the range from the maximum flow rate to a near-stall condition. A detailed study of the flow structure near peak efficiency and near stall is presented by means of pressure distribution and particle traces inside boundary layers.

Copyright © 1994 by The American Society of Mechanical Engineers
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