Multigrid Calculation of Three-Dimensional Viscous Cascade Flows

By: Nasa, National Aeronautics and Space Adm

A 3-D code for viscous cascade flow prediction was developed. The space discretization uses a cell-centered scheme with eigenvalue scaling to weigh the artificial dissipation terms. Computational efficiency of a four stage Runge-Kutta scheme is enhanced by using variable coefficients, implicit residual smoothing, and a full multigrid method. The Baldwin-Lomax eddy viscosity model is used for turbulence closure. A zonal, nonperiodic grid is used to minimize mesh distortion in and downstream of the throat region. Applications are presented for an annular vane with and without end wall contouring, and for a large scale linear cascade. The calculation is validated by comparing with experiments and by studying grid dependency. Arnone, A. and Liou, M.-S. and Povinelli, L. A. Glenn Research Center NASA ORDER C-99066-G; RTOP 505-62-21...

• Format: Paperback
• Language: English
• ISBN: 172909189X
• ISBN13: 9781729091890
• Release Date: January 1
• Publisher: Independently Published
• Length: 28 Pages
• Weight: 0.20 lbs.
• Dimensions: 0.1" x 8.5" x 11.0"