日本シミュレーション学会論文誌
Online ISSN : 1883-5058
Print ISSN : 1883-5031
ISSN-L : 1883-5058
論文
くりこみ群分子動力学法によるミクロ流体解析に関する考察
柏原 裕美長野 明紀羅 志偉
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ジャーナル フリー

2012 年 4 巻 1 号 p. 1-8

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  Molecular dynamics method (MD) has been used for the analysis of fluid field at the atomic and molecular level2), but the calculation cost has been a major bottleneck. Then, in recent years, many scientists are trying to develop new coarse graining methods to increase the speed of calculation. Renormalization molecular dynamics method (RMD)6) is one of them. The number of molecules is compressed by applying renormalization group conversion to the Hamiltonian, and simulations are possible at any scales by controlling number of conversion times. The applicability of this method for solids has already been proved, but the applicability for liquids or gases at the micro level has not been shown. In this study, we applied RMD to static argon liquid, gas-liquid layer and argon gas in simple shear flow. We calculated radial distribution function, coefficient of evaporation and viscosity and compared the results with normal MD. As a result, it was possible to shorten the simulation time to 1/13. The obtained results were similar to that of usual MD.

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© 2012 日本シミュレーション学会
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