Efficient solution of the Euler and Navier-Stokes equations with a vectorized multiple-grid algorithmA multiple-grid algorithm for use in efficiently obtaining steady solutions to the Euler and Navier-Stokes equations is presented. The convergence of the explicit MacCormack algorithm on a fine grid is accelerated by propagating transients from the domain using a sequence of successively coarser grids. Both the fine and coarse grid schemes are readily vectorizable. The combination of multiple-gridding and vectorization results in substantially reduced computational times for the numerical solution of a wide range of flow problems. Results are presented for subsonic, transonic, and supersonic inviscid flows and for subsonic attached and separated laminar viscous flows. Work reduction factors over a scalar, single-grid algorithm range as high as 76.8. Previously announced in STAR as N83-24467
Document ID
19830058141
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chima, R. V. (NASA Lewis Research Center Cleveland, OH, United States)
Johnson, G. M. (NASA Lewis Research Center Cleveland, OH, United States)