Application of meso-scale modelling for soft materials

我们开发了一种独特的数值方法直接数值模拟的稠密分散的胶体颗粒。该方法通过求解牛顿-欧拉方程、对流-扩散方程和Navier-Stokes方程，可以同时计算胶体粒子、离子和宿主流体的时间演化，从而充分考虑电-流体动力学耦合。我们已经成功地应用SP方法模拟了各种颗粒弥散问题的动力学，包括可压缩流体中的弥散颗粒，2）自推进颗粒（蠕动颗粒）的弥散，3）非球形刚性颗粒（通过组装多个球体而形成任意形状）的弥散。可从KAPSEL主页[http：//www-tph.cheme.kyoto-u.ac.jp/kapsel/]下载本研究中使用的软件。

We developed a unique numerical method for direct numerical simulations of dense dispersions of colloidal particles. This method, which we named the smoothed profile (SP) method, enables us to compute the time evolutions of colloidal particles, ions, and host fluids simultaneously by solving Newton-Euler, advection-diffusion, and Navier-Stokes equations so that the electro- hydrodynamic couplings can be fully taken into account. We have applied the SP method successfully for simulating the dynamics of various problems of particle dispersions, including dispersed particles in compressible fluids, 2) dispersions of self-propelled particles (squirmer), and 3) dispersions of non-sperical rigid particles (arbitanary shape by assembling multiple spheres. One can download the software used in the present studies from KAPSEL home page [http://www-tph.cheme.kyoto-u.ac.jp/kapsel/].