Combined effects of thermophoresis and electrophoresis on particle deposition onto a wavy surface disk

Chieh Li Chen, Kun Chieh Chan

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In this paper, the coordinate transformation method is used to analyze the aerosol particle deposition from a stagnation flow onto an axisymmetric wavy disk under to the coupling effects of Brownian diffusion, convection, sedimentation, thermophoresis and electrophoresis. The transformed governing equations obtained by coordinate transformation are solved by the spline alternating-direction implicit method. Numerical results show that electrophoresis will increase the particle deposition effect. It reveals that the thermophoresis effect of the cold wall will induce a driving effort to force particles toward the wall and accelerate the deposition onto the wall. When Brownian diffusion and thermophoresis dominate the particle deposition process, the influence of the lumpy surface geometry will become stronger with the increase of the disk radius, and the mean particle deposition effect of the wavy disk would be less than that of the flat disk.

Original languageEnglish
Pages (from-to)2657-2664
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume51
Issue number11-12
DOIs
Publication statusPublished - 2008 Jun 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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