Experimental study on a comparison of typical premixed combustible gas-air flame propagation in a horizontal rectangular closed duct

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

7 Scopus Citations
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Author(s)

  • Qiangling Duan
  • Zhongjing Peng
  • Liang Gong
  • Jinhua Sun

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)116-126
Journal / PublicationJournal of Hazardous Materials
Volume327
Publication statusPublished - 5 Apr 2017

Abstract

Research surrounding premixed flame propagation in ducts has a history of more than one hundred years. Most previous studies focus on the tulip flame formation and flame acceleration in pure gas fuel-air flame. However, the premixed natural gas-air flame may show different behaviors and pressure dynamics due to its unique composition. Natural gas, methane and acetylene are chosen here to conduct a comparison study on different flame behaviors and pressure dynamics, and to explore the influence of different compositions on premixed flame dynamics. The characteristics of flame front and pressure dynamics are recorded using high-speed schlieren photography and a pressure transducer, respectively. The results indicate that the compositions of the gas mixture greatly influence flame behaviors and pressure. Acetylene has the fastest flame tip speed and the highest pressure, while natural gas has a faster flame tip speed and higher pressure than methane. The Bychkov theory for predicting the flame skirt motion is verified, and the results indicate that the experimental data coincide well with theory in the case of equivalence ratios close to 1.00. Moreover, the Bychkov theory is able to predict flame skirt motion for acetylene, even outside of the best suitable expansion ratio range of 6 <E <8.

Research Area(s)

  • Comparison, Flame skirt motion, Flame tip speed, Premixed flame, Pressure dynamics

Citation Format(s)

Experimental study on a comparison of typical premixed combustible gas-air flame propagation in a horizontal rectangular closed duct. / Jin, Kaiqiang; Duan, Qiangling; Liew, K. M.; Peng, Zhongjing; Gong, Liang; Sun, Jinhua.

In: Journal of Hazardous Materials, Vol. 327, 05.04.2017, p. 116-126.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review