Stable and accurate schemes for smoothed dissipative particle dynamics
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Smoothed dissipative particle dynamics (SDPD) is a mesoscopic particle method that allows to select the level of resolution at which a fluid is simulated. The numerical integration of its equations of motion still suffers from the lack of numerical schemes satisfying all the desired properties such as energy conservation and stability. Similarities between SDPD and dissipative particle dynamics with energy (DPDE) conservation, which is another coarse-grained model, enable adaptation of recent numerical schemes developed for DPDE to the SDPD setting. In this article, a Metropolis step in the integration of the fluctuation/dissipation part of SDPD is introduced to improve its stability.
Key wordssmoothed dissipative particle dynamics (SDPD) numerical integration Metropolis algorithm
Chinese Library ClassificationO357.3
2010 Mathematics Subject Classification82-08 65C30 82C80
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We thank J. B. MAILLET for helpful discussion.
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