Accession Number : ADA307902

Title :   A Conservative Staggered-Grid Chebyshev Multidomain Method for Compressible Flows. II: A Semi-Structured Method.

Descriptive Note : Contract rept.,

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

Personal Author(s) : Kopriva, David A.

PDF Url : ADA307902

Report Date : MAR 1996

Pagination or Media Count : 29

Abstract : We present a Chebyshev multidomain method that can solve systems of hyperbolic equations in conservation form on an unrestricted quadrilateral subdivision of a domain. Within each subdomain the solutions and fluxes are approximated by a staggered-grid Chebyshev method. Thus, the method is unstructured in terms of the subdomain decomposition, but strongly structured within subdomains. Communication between subdomains is done by a mortar method in such a way that the method is globally conservative. The method is applied to both linear and nonlinear test problems and spectral accuracy is demonstrated.

Descriptors :   *GAS DYNAMICS, *COMPRESSIBLE FLOW, MATHEMATICAL MODELS, ALGORITHMS, GRIDS, ACCURACY, FINITE DIFFERENCE THEORY, NUMERICAL INTEGRATION, POLYNOMIALS, INTERPOLATION, CONVERGENCE, EULER EQUATIONS, SUBSONIC FLOW, NAVIER STOKES EQUATIONS, INVISCID FLOW, TIME DOMAIN, MAPPING(TRANSFORMATIONS), CHEBYSHEV APPROXIMATIONS, NOZZLE GAS FLOW, HYPERBOLIC DIFFERENTIAL EQUATIONS, TRANSONIC FLOW, STEADY FLOW, GAUSSIAN QUADRATURE.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE