Symbolic computation of the phoretic acceleration of convex particles suspended in a non-uniform gas

Abstract
A package has been developed for calculating analytic expressions for forces and torques onto an arbitrarily shaped convex tracer (aerosol) particle small compared to the mean free path of the surrounding nonequilibrium gas. The package Phoretic allows to compute analytical (and also numerical) expressions for forces and torques stemming from elastic and diffusive scattering processes parameterized by an accommodation coefficient. The method is based on calculating half-sphere integral tensor...

Title of program: PHORETIC
Catalogue Id: ADYI_v1_0

Nature of problem
Starting from a non-uniform velocity distribution function of a gas in terms of its moments, i.e., field variables, and field gradients such as temperature, pressure, or velocity field, the problem is to analytically calculate forces and torques acting onto arbitrarly shaped convex tracer (aerosol) particles small in size compared to the mean free path of the gas. The collision process is modeled as a superposition of elastic and diffusive scattering processes (parameterized by 0 ≤ α ≤ 1).

Versions of this program held in the CPC repository in Mendeley Data
ADYI_v1_0; PHORETIC; 10.1016/j.cpc.2006.06.012

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

摘要
本研究开发了一款程序包，用于解析计算作用于任意形状凸示踪（气溶胶）颗粒的受力与力矩，该颗粒尺度远小于周围非平衡气体的平均自由程。程序包PHORETIC可计算由弹性散射与漫散射过程（由适配系数（accommodation coefficient）参数化）所产生的受力与力矩的解析（及数值）表达式。本方法基于半球积分张量的计算……

程序名称：PHORETIC
目录编号：ADYI_v1_0

问题本质
以气体的非均匀速度分布函数的矩（即场变量）以及温度、压强、速度场等场梯度为起点，需解析计算尺度小于气体平均自由程的任意形状凸示踪（气溶胶）颗粒所受的受力与力矩。本研究将碰撞过程建模为弹性散射与漫散射过程的叠加（由0 ≤ α ≤ 1参数化）。

Mendeley数据中CPC程序库存储的该程序版本：ADYI_v1_0; PHORETIC; 10.1016/j.cpc.2006.06.012

本程序源自贝尔法斯特女王大学维护的CPC程序库（1969-2019年）