Molecular simulations of sound wave propagation in simple gases

被引：57

作者：

Hadjiconstantinou, NG ^{[1
]}

Garcia, AL

机构：

[1] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

[2] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA

[3] San Jose State Univ, Dept Phys, San Jose, CA 95192 USA

来源：

PHYSICS OF FLUIDS | 2001年 / 13卷 / 04期

关键词：

D O I：

10.1063/1.1352630

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Molecular simulations of sound waves propagating in a dilute hard sphere gas have been performed using the direct simulation Monte Carlo method. A wide range of frequencies is investigated, including very high frequencies for which the period is much shorter than the mean collision time. The simulation results are compared to experimental data and approximate solutions of the Boltzmann equation. It is shown that free molecular flow is important at distances smaller than one mean free path from the excitation point. (C) 2001 American Institute of Physics.

引用

页码：1040 / 1046

页数：7

共 28 条

[1] A CONSISTENT BOLTZMANN ALGORITHM [J].