Experimental study of limit lean methane/air flame in a standard flammability tube using particle image velocimetry method

Y. Shoshyn, G. Gorecki, J. Jarosinski, T. Fodemski

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

Lean limit methane/air flame propagating upward in a standard 50 mm diameter and 1.8 m length tube was studied experimentally using particle image velocimetry method. Local stretch rate along the flame front was determined by measured gas velocity distributions. It was found that local stretch rate is maximum at the flame leading point, which is in agreement with earlier theoretical results. Similar to earlier observations, extinction of upward propagating limit flame was observed to start from the flame top. It is stated that the observed behavior of the extinction of the lean limit methane/air flame can not be explained in terms of the coupled effect of flame stretch and preferential diffusion. To qualitatively explain the observed extinction behavior, it is suggested that the positive strain-induced flame stretch increases local radiation heat losses from the flame front. An experimental methodology for PIV measurements in a round tube is described.
Original languageEnglish
Pages (from-to)884-892
JournalCombustion and Flame
Volume157
Issue number5
DOIs
Publication statusPublished - 2010

Fingerprint Dive into the research topics of 'Experimental study of limit lean methane/air flame in a standard flammability tube using particle image velocimetry method'. Together they form a unique fingerprint.

  • Cite this