The Coagulation of Soot Particles with van der Waals Forces

Stephen J. Harris, Ian M. Kennedy

Research output: Contribution to journalArticlepeer-review

86 Scopus citations


A detailed calculation of the coagulation kinetics of a soot aerosol has been performed by simulating numerically the coagulation kinetics with the inclusion of van der Waals forces. The van der Waals forces between two soot particles at 1600 K and 1 atmosphere give rise to a collision rate enhancement which varies between a maximum of about 2.4 for 1 nm diameter particles to just over 1 for particles of dissimilar sizes. The total coagulation rate with the estimated enhancement factors was about twice the unenhanced rates; this compares favorably with experiment. Over the duration of the computation the soot aerosol size distribution approaches closely the self-preserving form, whether or not the collisional enhancement factors are included.

Original languageEnglish (US)
Pages (from-to)443-454
Number of pages12
JournalCombustion Science and Technology
Issue number4-6
StatePublished - Jun 1 1988

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Physics and Astronomy(all)


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