著者

杉井 泰介

出版者

分子シミュレーション研究会

雑誌

アンサンブル (ISSN:18846750)

巻号頁・発行日

vol.17, no.2, pp.128-131, 2015-04-30 (Released:2016-04-30)

著者

杉井 泰介 石井 英二

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集B編 (ISSN:18848346)

巻号頁・発行日

vol.77, no.781, pp.1779-1790, 2011 (Released:2011-09-25)

参考文献数

23

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We present a simulation of meso-scale fluid in a grooved channel conducted using the many-body dissipative particle dynamics (MDPD) method. The simulation system consists of a straight channel with a rectangular groove and a liquid that fills the channel. In the simulation, an instantaneous liquid interface was defined and the time-series variation of the angle between the channel wall and the interface was investigated. The calculated angle was found to satisfy the Gibbs' inequality condition when the interface passes the corner of the groove. We also investigated the behavior in which the liquid filled the groove by varying the contact angle between the liquid and the channel wall. The results show that the feasibility of filling the groove, which depends on the contact angles between the liquid and the grooved/non-grooved channel wall, qualitatively agrees with the geometrical analysis. We also showed that a smaller contact angle between the liquid and the grooved channel wall and a larger contact angle between the liquid and the non-grooved channel wall causes the liquid to fill the groove.