Flame stability of rod stabilised premixed butane/air flames

M. Drkos, Chun Wah Leung, Chun Shun Cheung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


Regions of flame stability were obtained experimentally for a premixed butane/air flame stabilised by an axially mounted solid rod for low Reynolds numbers (Re<3600). Equivalence ratios ranging from 0.4 to 3.0 were applied in the present study. There were two non-dimensional parameters proposed to represent the variation of geometrical configurations: rod protrusion BR(0-2) and rod to tube ratio BT(0.51-0.8). Inverted, partially inverted and regular (Bunsen) flames were fundamental flame types identified across the stable regions. Inter-regions wore characterised by the existence of more than one stable flame type, primarily depending on the axial and radial distances of the ignition source from the burner port. The size of the unstable region extended with increasing BR, and the effect of BTshowed a similar trend. The use of rod of smaller diameter extended the flashback region, whereas blow-off limits were less dependent on these geometrical parameters. The rod stabilised method enabled the premixed flame to operate with a very fuel lean mixture.
Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalJournal of the Energy Institute
Issue number1
Publication statusPublished - 1 Mar 2009


  • Butane/air premixed flame
  • Flame stability
  • Inverted and partially inverted flames
  • Regular
  • Rod stabilisation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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