Accession Number : ADA298971

Title :   Krylov Methods for Compressible Flows.

Descriptive Note : Contract rept.,

Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Personal Author(s) : Tidriri, M. D.

PDF Url : ADA298971

Report Date : JUN 1995

Pagination or Media Count : 32

Abstract : In this paper we investigate the application of Krylov methods to compressible flows, and the effect of implicit boundary conditions on the implicit solution of nonlinear problems. Two defect-correction procedures, namely, Approximate Factorization (AF) for structured grids, and ILU/GMRES for general grids are considered. Also, considered here is Newton-Krylov matrix-free methods that we combined with the use of mixed discretization schemes in the implicitly defined Jacobian and its preconditioner. Numerical experiments that show the performance of our approaches are then presented. (AN)

Descriptors :   *COMPUTATIONAL FLUID DYNAMICS, *COMPRESSIBLE FLOW, *NUMERICAL METHODS AND PROCEDURES, MATHEMATICAL MODELS, ALGORITHMS, STEADY STATE, MATRICES(MATHEMATICS), GRIDS, PROBLEM SOLVING, MATHEMATICAL PROGRAMMING, BOUNDARIES, FINITE DIFFERENCE THEORY, NONLINEAR SYSTEMS, APPROXIMATION(MATHEMATICS), CONVERGENCE, SUPERSONIC FLOW, STEADY FLOW.

Subject Categories : Numerical Mathematics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE