Direct numerical simulation of aerosol coagulation with van der Waals forces

Ian M. Kennedy, Stephen J. Harris

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The van der Waals interaction energy has been computed for a large number of silver and water particle pairs in the range of 1 to 15 nm radius by first calculating the exact, retarded Hamaker factor for semi-infinite bodies and then applying a geometric correction for sphericity. The enhancement of particle collision rates has been deduced from these calculations. These values for the collisional enhancement were used in a direct numerical simulation of the coagulation of silver and water aerosols. Despite the size dependence of the van der Waals enhancement factors, the aerosol size distributions quickly attained nearly self-preserving forms.

Original languageEnglish (US)
Pages (from-to)489-497
Number of pages9
JournalJournal of Colloid and Interface Science
Issue number2
StatePublished - 1989

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces


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