Scaling of a small scale burner fire whirl

Katherine Hartl, Alexander J Smits

Research output: Contribution to journalArticleResearchpeer-review

31 Citations (Scopus)


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
Pages (from-to)202 - 208
Number of pages7
JournalCombustion and Flame
Publication statusPublished - 2016


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

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