Direct Simulation Monte Carlo (DSMC) on the Connection Machine

Conference · Tue Dec 31 23:00:00 EST 1991

OSTI ID:5589883

Wong, B C; Long, L N ^[1]

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1. Pennsylvania State University, University Park (United States)

The massively parallel computer Connection Machine is utilized to map an improved version of the direct simulation Monte Carlo (DSMC) method for solving flows with the Boltzmann equation. The kinetic theory is required for analyzing hypersonic aerospace applications, and the features and capabilities of the DSMC particle-simulation technique are discussed. The DSMC is shown to be inherently massively parallel and data parallel, and the algorithm is based on molecule movements, cross-referencing their locations, locating collisions within cells, and sampling macroscopic quantities in each cell. The serial DSMC code is compared to the present parallel DSMC code, and timing results show that the speedup of the parallel version is approximately linear. The correct physics can be resolved from the results of the complete DSMC method implemented on the connection machine using the data-parallel approach. 41 refs.

• OSTI ID: 5589883
• Report Number(s): AIAA-Paper--92-0564; CONF-920157--
• Country of Publication: United States
• Language: English

Related Subjects

665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
BOLTZMANN EQUATION
COMPUTER ARCHITECTURE
COMPUTER CODES
COMPUTERIZED SIMULATION
D CODES
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID FLOW
HYPERSONIC FLOW
KINETICS
MATHEMATICAL LOGIC
MONTE CARLO METHOD
PARALLEL PROCESSING
PARTIAL DIFFERENTIAL EQUATIONS
PROGRAMMING
SIMULATION