An approximate method to calculate the collision rates of a discrete- sectional model

Suyuan Yu, Ian M. Kennedy

Research output: Contribution to journalArticle

3 Scopus citations


An approximate method is proposed to improve the computational efficiency of discrete-sectional representations of aerosol dynamics. The expense that is associated with the numerical calculation of intersectional conversion rates is reduced by using a binomial expansion of the nondimensional collision frequency function in the summand so that an analytical integral form for the inner collision summation is obtained. A considerable saving in computational expense is achieved in comparison with a double summation with a very small sacrifice in accuracy.

Original languageEnglish (US)
Pages (from-to)266-273
Number of pages8
JournalAerosol Science and Technology
Issue number2
Publication statusPublished - Aug 1997


ASJC Scopus subject areas

  • Mechanical Engineering
  • Environmental Science(all)
  • Environmental Chemistry

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