Multigrid calculations of 3-D turbulent viscous flowsConvergence properties of a multigrid algorithm, developed to calculate compressible viscous flows, are analyzed by a vector sequence eigenvalue estimate. The full 3-D Reynolds-averaged Navier-Stokes equations are integrated by an implicit multigrid scheme while a k-epsilon turbulence model is solved, uncoupled from the flow equations. Estimates of the eigenvalue structure for both single and multigrid calculations are compared in an attempt to analyze the process as well as the results of the multigrid technique. The flow through an annular turbine is used to illustrate the scheme's ability to calculate complex 3-D flows.
Document ID
19900055371
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yokota, Jeffrey W. (NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)