Flame-Flow Interaction in a Turbulent Premixed Flame (Evolution of Gas Velocity behind the Flame Fronts)

• YOSHIDA Yasuko

  Department of Mechanical Engineering Tokyo Metropolitan College of Industrial Technology

• 古川 純一

  東京都立産業技術高等専門学校

• 野口 佳樹

  龍谷大学理工学部

• Forman A. WILLIAMS

  University of California, San Diego

Bibliographic Information

Other Title

• 乱流予混合火炎における火炎と流れの相互作用（火炎面背後におけるガス流動）

Abstract

An LDV system was employed to measure three components of velocity at a mid-flame point on the centerline of a propane-air flame of equivalence ratio 1.10 on a 26 mm-diameter Bunsen burner with fully developed turbulent pipe flow upstream at a Reynolds number of 6700. The LDV measurement volume was 1mm below the leading electrode of a four-element electrostatic probe that provided the velocity and direction of motion of flame-front in the turbulent flame brush. It was found that when the coordinate system was rotated about a vertical axis to the plane of the flame-front velocity vector, most of the burnt-gas motion following flame-front passage remained largely in this plane. The sequence of LDV data for gas motion in the burnt gas consistently showed movement beginning first in a direction opposite to that of flame-front front passage, then gradually rotating until finally becoming in the direction of flame-front passage, completing a turn of 180 degrees. This behavior is explained qualitatively by considering a momentum conservation and of the nature of the LDV measurements. Histories of gas-acceleration vectors in the burnt gas were derived from the LDV data, demonstrating the turbulent fluctuations that are imposed on this systematic behavior.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 78 (794), 1822-1831, 2012

  The Japan Society of Mechanical Engineers

Keywords

• Turbulence
• Flame
• Premixed Combustion
• Laser Doppler Velocimeter
• Electrostatic Probe
• Flame Flow Interaction

Details

• CRID: 1390282681238220288
• NII Article ID: 130002050829
• DOI: 10.1299/kikaib.78.1822
• ISSN: 18848346
• ISSN: 03875016
• Web Site: https://www.jstage.jst.go.jp/article/kikaib/78/794/78_1822/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed