Numerical simulation using the finite difference lattice boltzmann method about propagations of small pressure waves generated by a falling 2D liquid drop

被引：0

作者：

Tajiri, Shinsuke ^{[1
]}

Tsutahara, Michihisa ^{[1
]}

Tanaka, Toshio ^{[1
]}

机构：

[1] Graduate School of Science and Technology, Kobe University, Nada-ku, Kobe-shi, Hyogo, 657-8501

来源：

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2008年 / 74卷 / 12期

关键词：

Computational fluid dynamics; Finite difference lattice boltzmann method; Free-surface flow; Gas-liquid two-phase flow; Liquid drop; Numerical simulation;

D O I：

10.1299/kikaib.74.2435

中图分类号：

学科分类号：

摘要：

In this paper, pressure propagations generated by liquid-gas interactions were investigated by using a newly proposed model of the finite difference lattice Boltzmann method. The model which based on a constitutive equation of pressure allows us to consider the sound speeds for gas and liquid phases. As for the liquid-gas flow with the density ratio of about 1 000, the liquid drop impacting against a thin liquid film in the two-dimensional space was compared with other calculations. Pressure propagations in the case of the two-dimensional drop falling to a deep liquid on a gravity field were clarified by using the same model. The pressure fluctuation was 10-5 times smaller than the reference pressure had the unique directivity.

引用

页码：2435 / 2442

页数：7

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