Recommendations on performance of parallel DSMC algorithm in solving subsonic nanoflows |
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| Authors: | Ehsan Roohi Masoud Darbandi |
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| Affiliation: | a Mechanical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91775-1111, Mashhad, Iran
b Department of Aerospace Engineering, Institute for Nanoscience and Nanotechnology, Center of Excellence in Aerospace Systems, Sharif University of Technology, P.O. Box 11365-8639, Tehran, Iran |
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| Abstract: | We investigate the efficiency of a parallel direct simulation Monte Carlo (PDSMC) algorithm in solving the rarefied subsonic flow through a nanochannel. We use MPI library to transfer data between the processors. It is observed that PDSMC solver shows ideal speed up if sufficient workload is provided for each of processors. Additionally, this study shows that the computational time and speed up of the extended PDSMC solver do not depend (or slightly depend) on the number of cells. In contrary, increasing the total number of particles would result in a better efficiency of the PDSMC. |
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| Keywords: | DSMC Parallel computing MPI Nanochannel |
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