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RESEARCH PAPERS

Structure of the Stabilizing Region of a Laminar Jet Diffusion Flame

[+] Author and Article Information
F. Takahashi

Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544

M. Mizomoto, S. Ikai

Department of Mechanical Engineering, Keio University, Yokohama, 223 Japan

J. Heat Transfer 110(1), 182-189 (Feb 01, 1988) (8 pages) doi:10.1115/1.3250450 History: Received December 09, 1986; Online October 20, 2009

Abstract

Velocity, temperature, and composition of major species were measured in the base region of a two-dimensional, laminar methane jet diffusion flame in unconfined still air under a low-velocity jetting condition. The velocity data showed acceleration near the flame zone caused primarily by thermal expansion and buoyancy. The heat flux vectors showed substantial heat flow from the flame base to both downstream and the burner wall. The premixed zone was formed in the dark space by convective penetration of oxygen and back-diffusion of methane. The molar flux vectors of methane and oxygen at the base pointed to the opposite directions, typical of diffusion flames.

Copyright © 1988 by ASME
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