TY - GEN

T1 - Solving the Boltzmann equation at 61 Gigaflops on a 1024-Node CM-5

AU - Long, L. N.

AU - Myczkowski, J.

PY - 1993

Y1 - 1993

N2 - This paper documents the use of a massively parallel computer, specifically the Connection Machine CM-5, to solve the Boltzmann equation to model one-dimensional shock wave structure, a boundary layer, and general 3-D flow fields. The Bhatnagar-Gross-Krook (BGK) model for the collision term combined with a finite difference scheme was used to model the flow. This collision terms requires accurate knoweldge of the density, temperature, and mean velocity. Great care must be taken in their calculation to insure conservation, which proved to be the most difficult part. The algorithm, however, is well suited to the Connection Machine, and accurate results were obtained with great efficiency. The 1-D version of the code (which actually models a 5-D problem in phase space) was optimized for the CM-5 and sustained 61 gigaflops on a 1024-node CM-5.

AB - This paper documents the use of a massively parallel computer, specifically the Connection Machine CM-5, to solve the Boltzmann equation to model one-dimensional shock wave structure, a boundary layer, and general 3-D flow fields. The Bhatnagar-Gross-Krook (BGK) model for the collision term combined with a finite difference scheme was used to model the flow. This collision terms requires accurate knoweldge of the density, temperature, and mean velocity. Great care must be taken in their calculation to insure conservation, which proved to be the most difficult part. The algorithm, however, is well suited to the Connection Machine, and accurate results were obtained with great efficiency. The 1-D version of the code (which actually models a 5-D problem in phase space) was optimized for the CM-5 and sustained 61 gigaflops on a 1024-node CM-5.

UR - http://www.scopus.com/inward/record.url?scp=0027721229&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027721229&partnerID=8YFLogxK

U2 - 10.1145/169627.169795

DO - 10.1145/169627.169795

M3 - Conference contribution

AN - SCOPUS:0027721229

SN - 0818643404

SN - 9780818643408

T3 - Proceedings of the Supercomputing Conference

SP - 528

EP - 534

BT - Proceedings of the Supercomputing Conference

PB - Publ by IEEE

T2 - Proceedings of the Supercomputing '93 Conference

Y2 - 15 November 1993 through 19 November 1993

ER -