Multitasked embedded multigrid for three-dimensional flow simulation. Final report
This project explored fast algorithms for Euler and Navier-Stokes simulations. A particular issue pursued under the grant was the integration of an explicit three dimensional flow solver, embedded mesh refinements, a model equation hierarchy, multiple grid acceleration and extensive rectorization and multi tasking. Several papers were produced during this effort including such titles as Multitasked embedded multigrid for three-dimensional flow simulation and Multigrid approaches to the Euler equations. An efficient algorithm designed to be used for Navier-Stokes simulations of complex flows over complete configurations is described. The algorithm incorporates a number of elements, including an explicit three-dimensional flow solver, embedded mesh refinements, a model equation hierarchy ranging from the Euler equations through the full Navier-Stokes equations, multiple-grid convergence acceleration and extensive vectorization and multitasking for efficient execution on parallel-processing supercomputers. Results are presented for a preliminary trial of the method on a problem representative of turbomachinery applications. Based on this performance data, it is estimated that a mature implementation of the algorithm will yield overall speedups ranging as high as 100.
- Research Organization:
- Institute for Scientific Computing, Fort Collins, CO (USA)
- OSTI ID:
- 5525093
- Report Number(s):
- AD-A-185631/9/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ACCELERATION
ALGORITHMS
COMPUTERIZED SIMULATION
COMPUTERS
DIFFERENTIAL EQUATIONS
DIGITAL COMPUTERS
EFFICIENCY
ELECTRODES
EQUATIONS
FLUID FLOW
GRIDS
MACHINERY
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
PARALLEL PROCESSING
PROGRAMMING
SIMULATION
SUPERCOMPUTERS
TURBOMACHINERY