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

## Description

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)