A Particle-Only Hybrid Method for Near-Continuum Flows

Macrossan, Michael N. (2001). A Particle-Only Hybrid Method for Near-Continuum Flows. In: Tim J.Bartel and Michael Gallis 22nd International Symposium on Rarefied Gas Dynamics (AIP Conference Proceedings), Sydney, Australia, (388-395). 9-14 July, 2000.

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Author Macrossan, Michael N.
Title of paper A Particle-Only Hybrid Method for Near-Continuum Flows
Conference Paper Type Fully Published Paper
Conference name 22nd International Symposium on Rarefied Gas Dynamics (AIP Conference Proceedings)
Conference location Sydney, Australia
Conference dates 9-14 July, 2000
Journal name Rarefied Gas Dynamics   Check publisher's open access policy
Editor Tim J.Bartel
Michael Gallis
Place published USA
Publisher American Institute of Physics
Publication date 2001
Volume number 585
ISBN 0-7354-0025-3
ISSN 0094-243X
Start page 388
End page 395
Total pages 8
Language eng
Abstract/Summary EPSM is a particle simulation method for the simulation of the Euler equations. EPSM is used here as part of a hybrid EPSM/DSMC method for the simulation of near continuum flows. It is used where the flow gradients are not large and the flow is expected to be in an equilibrium state. The gradient of local mean free path has been used to detect those regions where EPSM can be invoked. Results are presented for the unsteady flow of a gas in a shock tube with Knudsen numbers in the initial state of 0.01 and 0.002 either side of the diaphragm (based on the length of the initial low-pressure region). The results for the hybrid method are very close to those for pure DSMC. The execution speed of the hybrid code is 1.75 times that of standard DSMC.
Subjects 240502 Fluid Physics
E1
780102 Physical sciences
Keyword DSMC
near-continuum
hybrid method
simulation
Q-Index Code E1

Document type: Conference Paper
Sub-type: Fully Published Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Tue, 15 Feb 2005, 10:00:00 EST by Michael N Macrossan on behalf of School of Engineering