Parallel Monte Carlo Simulation of Three-Dimensional Flow over a Flat
Plate
Parallel Monte Carlo Simulation of Three-Dimensional Flow over a Flat
Plate
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Date
1998-10-15
Authors
Nance, Robert P.
Fallah-Adl, Hassan
Wilmoth, Richard G.
Moon, Bongki
Saltz, Joel
Advisor
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Abstract
This paper describes a parallel implementation of the direct simulation
Monte Carlo method. Runtime library support is used for scheduling and
execution of communication between nodes, and domain decomposition is
performed dynamically to maintain a favorable load balance. Performance
tests are conducted using the code to evaluate various remapping and
remappinginterval policies, and it is shown that a one-dimensional
chain-partitioning method works best for the problems considered. The
parallel code is then used to simulate the Mach 20 nitrogen JYow over a
finite-thickness fiat plate. It will be shown that the parallel algorithm
produces results which are very similar to previous DSMC results, despite
the increased resolution available. However, it yields significantly
faster execution times than the scalar code, as well as very good
load-balance and scalability characteristics.
(Also cross-referenced as UMIACS-TR-95-25)