A three dimensional multigrid multiblock multistage time stepping scheme for the Navier-Stokes equationsA general multiblock method for the solution of the three-dimensional, unsteady, compressible, thin-layer Navier-Stokes equations has been developed. The convective and pressure terms are spatially discretized using Roe's flux differencing technique while the viscous terms are centrally differenced. An explicit Runge-Kutta method is used to advance the solution in time. Local time stepping, adaptive implicit residual smoothing, and the Full Approximation Storage (FAS) multigrid scheme are added to the explicit time stepping scheme to accelerate convergence to steady state. Results for three-dimensional test cases are presented and discussed.
Document ID
19930068195
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Elmiligui, Alaa (NASA Langley Research Center Hampton, VA, United States)
Cannizzaro, Frank (Old Dominion Univ. Norfolk, VA, United States)
Melson, N. D. (NASA Langley Research Center Hampton, VA, United States)