Adaptive local-grid refinement in computational fluid mechanics. Final report, 1 April 1985-30 September 1987
Several promising new techniques for efficient and accurate numerical solution of large-scale fluid-flow problems were developed. These methods include self-adaptive mesh-modification techniques for applications requiring front-tracking and local-grid refinement as well as new preconditioning ideas for efficient implementation. Properties of systems of hyperbolic conservation laws were obtained which will aid in development of accurate front-tracking algorithms. Adaptive grid-refinement techniques developed include moving-grid methods, local, fixed refinement involving linked-list data structures, and certain local-patch refinement ideas that have great potential for ease of implementation in existing large-scale codes. Domain decomposition concepts for obtaining efficient preconditioners for iterative techniques have proved quite useful both for local-patch refinement and for the solution of problems with rapidly varying coefficients. The fast adaptive algorithms being developed have high potential for both parallelization and vectorization. The algorithms have been designed to take advantage of the emerging parallel and vector-oriented computer architectures. Finally, the incorporation of these fast algorithms in accurate finite-element, collocation, and finite difference methods is underway.
- Research Organization:
- Wyoming Univ., Laramie (USA)
- OSTI ID:
- 7199637
- Report Number(s):
- AD-A-192215/2/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Two variants of minimum discarded fill ordering
End-to-end GPU acceleration of low-order-refined preconditioning for high-order finite element discretizations
Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMPUTER ARCHITECTURE
ALGORITHMS
FLUID FLOW
COMPUTER CALCULATIONS
FLUID MECHANICS
DECOMPOSITION
GRIDS
MOTION
NUMERICAL ANALYSIS
PROGRESS REPORT
CHEMICAL REACTIONS
DOCUMENT TYPES
ELECTRODES
MATHEMATICAL LOGIC
MATHEMATICS
MECHANICS
420400* - Engineering- Heat Transfer & Fluid Flow
640410 - Fluid Physics- General Fluid Dynamics
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)