Tatsumi Rei, Yamamoto Ryoichi
Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Jun;85(6 Pt 2):066704. doi: 10.1103/PhysRevE.85.066704. Epub 2012 Jun 12.
We present a direct numerical simulation method for investigating the dynamics of dispersed particles in a compressible solvent fluid. The validity of the simulation is examined by calculating the velocity relaxation of an impulsively forced spherical particle with a known analytical solution. The simulation also gives information about the fluid motion, which provides some insight into the particle motion. Fluctuations are also introduced by random stress, and the validity of this case is examined by comparing the calculation results with the fluctuation-dissipation theorem.
我们提出了一种直接数值模拟方法，用于研究可压缩溶剂流体中离散颗粒的动力学。通过计算具有已知解析解的脉冲驱动球形颗粒的速度弛豫来检验模拟的有效性。该模拟还给出了有关流体运动的信息，这为颗粒运动提供了一些见解。随机应力也会引入波动，并通过将计算结果与涨落耗散定理进行比较来检验这种情况的有效性。
