Accession Number : ADA294176

Title :   A Three-Dimensional Inviscid Flow Solver in Chimera Flow Simulation.

Descriptive Note : Final rept. 15 Aug 90-15 Feb 94,

Corporate Author : CALIFORNIA UNIV DAVIS

Personal Author(s) : Wang, Y.

PDF Url : ADA294176

Report Date : FEB 1994

Pagination or Media Count : 61

Abstract : Application of Computational Fluid Dynamics (CFD) to complex three-dimensional configurations is constrained by generation of the computational grid, accuracy limitations imposed by the discretization of the governing equations, and requirements for computational efficiency. The chimera grid technique seeks to take advantage of the computational efficiency and numerical accuracy developed for structured-grid CFD techniques and to take advantage of the geometric flexibility offered by overset grid mechanisms. The chimera method can provide the flexibility to employ boundary-conformal grids on aerodynamic components, refine the mesh selectively in regions of interest, and allow different flow models to be solved in different zones of the grid. The primary objective of this research is to develop the methodology for using the chimera technique on general three-dimensional configuration problems. This work focuses primarily on inviscid analysis, both as proof-of-concept and development for zonal CFD techniques.

Descriptors :   *COMPUTATIONAL FLUID DYNAMICS, *INVISCID FLOW, *AERODYNAMICS, MATHEMATICAL MODELS, COMPUTATIONS, EQUATIONS OF MOTION, GRIDS, NUMERICAL ANALYSIS, EFFICIENCY, LIMITATIONS, CONFIGURATIONS, THREE DIMENSIONAL FLOW.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE