Scaling of a small scale burner fire whirl

K. A. Hartl, A. J. Smits

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


The behavior of a fire whirl generated using a burner is examined using Particle Image Velocimetry. Swirl is generated using two staggered cylinder halves that surround the burner. The unsteadiness of the whirl is characterized, and the ensemble-averaged mean velocity profiles are obtained based on the instantaneous whirl position. The non-dimensional circulation and whirl height, and the Froude number based on the centerline velocity and height above the burner, are shown to follow simple scaling laws. In particular, we show that the non-dimensional whirl height depends only on the non-dimensional circulation.

Original languageEnglish (US)
Pages (from-to)202-208
Number of pages7
JournalCombustion and Flame
StatePublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • General Physics and Astronomy


  • Circulation
  • Fire whirl
  • Froude number
  • Scaling behavior
  • Stereo particle image velocimetry
  • Velocity profiles


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