Accession Number:

ADA167466

Title:

Chimera. A Grid-Embedding Technique

Descriptive Note:

Final rept. 1 Nov 1980-1 Oct 1985

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

• Benek, J. A.
• Steger, J. L.
• Dougherty, F. C.
• Buning, P. G.

Report Date:

1986-04-01

Pagination or Media Count:

129.0

Abstract:

A three-dimensional chimera grid-embedding technique is described. The technique simplifies the construction of computational grids about complex geometries. The method subdivides the physical domain into regions which can accommodate easily generated grids. Communication among the grids is accomplished by interpolation of the dependent variables at grid boundaries. The procedures for constructing the composite mesh and the associated data structures are described. The method is demonstrated by solution of the Euler equations for transonic flow about three ellipsoid bodies in close proximity, a wingbody, and a wingbodytail. Keywords Grid-embedding techniques, Computational fluid dynamics, Computer programs, Chimera-grid solution, Finite- difference techniques, Transonic flow, Domain-decomposition techniques, Grid- adapting methods.

Descriptors:

• *COMPUTER GRAPHICS
• *FINITE ELEMENT ANALYSIS
• *GRIDS
• *TRANSONIC FLOW
• *WING BODY CONFIGURATIONS
• BODIES
• BOUNDARIES
• COMPUTATIONS
• COMPUTER PROGRAMS
• CONSTRUCTION
• DATA BASES
• DIFFERENTIAL EQUATIONS
• ELLIPSOIDS
• FINITE DIFFERENCE THEORY
• FLUID DYNAMICS
• GEOMETRY
• INTERPOLATION
• TAIL ASSEMBLIES
• VARIABLES

Subject Categories:

• Theoretical Mathematics
• Computer Programming and Software
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE