A Non-Orthogonal Numerical Method for Solving Transonic Cascade Flows PUBLIC ACCESS

[+] Author Affiliations
P. R. Dodge

The Garrett Corporation, Phoenix, AZ

Paper No. 76-GT-63, pp. V01AT01A063; 10 pages
  • ASME 1976 International Gas Turbine and Fluids Engineering Conference
  • Volume 1A: General
  • New Orleans, Louisiana, USA, March 21–25, 1976
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7974-0
  • Copyright © 1976 by ASME


Recently, external transonic aerodynamic methods have shifted from time-dependent methods to relaxation methods, and have been applied to cascade flows. The results were excellent for supercritical compressor cascades, but for more general transonic conditions, the methods proved inadequate. Detailed studies of a choked turbine cascade and corresponding compressor cascades led to the tentative conclusion that the difficulty was associated with a lack of correspondence between the difference star and differential equation region of influence. The analytical approach developed herein avoids this difficulty by construction of difference stars along a non-orthogonal grid system closely aligned to characteristic lines.

Copyright © 1976 by ASME
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