Diffusiophoresis of a Spherical Volatile Particle

Abstract

A spherical condensed phase (volatile particle) is placed in an infinite expanse of a binary mixture consisting of the vapor of the condensed phase and another noncondensable gas. The mixture is assumed to be at rest with uniform pressure and temperature at infinity. However, the vapor and the noncondensable gas have small uniform density (or concentration) gradients of the same magnitude but in the opposite direction. The flows of both components around the particle are analyzed numerically by a finite-difference method on the basis of a model Boltzmann equation for gas mixtures, and the force acting on the particle (diffusiophoretic force) is obtained accurately for a wide range of the Knudsen number.

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Document Details

Document Type
Technical Report
Publication Date
Jul 13, 2005
Accession Number
ADA446006

Entities

People

  • Kazuo Aoki
  • Masatake Hatano
  • Shigeru Takata
  • Shingo Kosuge

Organizations

  • Kyoto University

Tags

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Boundaries
  • Boundary Value Problems
  • Coordinate Systems
  • Diffusion Coefficient
  • Distribution Functions
  • Engineering
  • Equations
  • Flow
  • Gas Dynamics
  • Gas Flow
  • Gases
  • Kinetic Theory
  • Knudsen Number
  • Mean Free Path
  • Numerical Analysis
  • Particles

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Combustion science or combustion engineering.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)