Work

Parallel DSMC solution of three-dimensional flow over a finite flat plate

Year: 1994

Type: conference-paper

Abstract: This paper describes a parallel implementation of the direct simulation Monte Carlo (DSMC) method.Runtime library support is used for scheduling and execution of communication between nodes, and domain decomposition is performed dynamically to maintain a good load balance.Performance tests are conducted using the code to evaluate various remapping and remapping-interval policies, and it is shown that a onedimensional chain-partitioning method works best for the problems considered.The parallel code is then used to simulate the Mach 20 nitrogen flow over a finitethickness flat plate.It is shown that the parallel algorithm produces results which compare well with experimental data.Moreover, it yields significantly faster execution times than the scalar code, as well as very good load-balance characteristics. NomenclatureFreestream Mach number Re Reynolds number Stagnation pressure, bars Surface pressure, Pa Surface heat flux, W/m 2 Time required to compute 1 time step Stagnation temperature, K Surface temperature, K System degradation function Rotational relaxation number

Source: AIAA/ASME Joint Thermophysics and Heat Transfer Conference

DOI: 10.2514/6.1994-2019

Authors: Nance, Robert P., Wilmoth, Richard G., Moon, Bongki, Hassan, H. A., Saltz, Joel

Institutions: North Carolina State University, Langley Research Center, University of Maryland, College Park

Language: English

Topic: Gas Dynamics and Kinetic Theory

Subfield: Applied Mathematics

Field: Mathematics

Domain: Physical Sciences

Open Access status: bronze