Effects of variable density on response of spherical diffusion flames under rotation

S. W. Yoo, C. K. Law

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The spherical diffusion flame generated by either a porous burner or a fuel droplet in response to rotational motion was investigated through perturbation analysis, with emphasis on the effects variable density. While it was shown that main feature of the problem was adequately described by the constant-density model, the variable-density formulation revealed two new insights: (1) perturbations due to rotation decrease substantially as compared with the constant-density formulation, suggesting that the perturbing effects of rotation are substantially absorbed and thereby mitigated by the density variation, and (2) magnitude of the perturbations strongly depends on the ratio of the burner/droplet surface temperature to the ambient temperature.

Original languageEnglish (US)
Pages (from-to)2924-2935
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Volume50
Issue number15-16
DOIs
StatePublished - Jul 1 2007

All Science Journal Classification (ASJC) codes

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

Keywords

  • Asymptotic analysis
  • Combustion
  • Rotating sphere

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