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RESEARCH PAPER

A Computational Study on Flame-Solid Radiative Interaction in Flame Spread Over Thin Solid-Fuel

[+] Author and Article Information
Amit Kumar, Kevin Tolejko, James S. T’ien

Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106

J. Heat Transfer 126(4), 611-620 (Mar 17, 2004) (10 pages) doi:10.1115/1.1773196 History: Received February 28, 2003; Revised March 17, 2004
Copyright © 2004 by ASME
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Figures

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Schematic of opposed (downward/self-propagating) flow spreading flame
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(a) Normal gravity (1g) downward spreading flame at 21% O2, solid radiative properties of (ε=α=1), flame is represented by fuel reaction rate contours. Left half: stream functions, Right half: velocity vectors with respect to flame; and (b) microgravity (μg) self-propagating flame at 21% O2, solid radiative properties (ε=α=1), flame is represented by fuel reaction rate contours. Left half: stream functions, Right half: velocity vectors with respect to flame.
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Heat flux distribution on the solid for (a) normal gravity downward spreading flame at 21% O2(ε=α=1); and (b) microgravity (μg) self-propagating flame at 21% O2(ε=α=1)
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Flame spread rate as a function of radiation properties of the solid ε(=α), in normal gravity (1g) and microgravity (μg) environment
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Limiting Oxygen Index (LOI) as a function of radiation properties of the solid ε(=α), in 1g and μg environment
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Parametric study of flame solid interaction in μg self-propagating flame. Inset shows equivalent curves for 1g flame.
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Heat flux distribution on the solid (a) (ε=α=0); (b) (ε=1, α=0); (c) (ε=0, α=1); and (d) (ε=1, α=1)

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