Wind-Aided Firespread Across Arrays of Discrete Fuel Elements. II. Experiment

Autor:	M. F. wolff, George F. Carrier, Francis E. Fendell
Rok vydání:	1991
Předmět:	Materials science Meteorology General Chemical Engineering General Physics and Astronomy Energy Engineering and Power Technology Geometry General Chemistry Planform Wind speed Ceramic substrate Fuel Technology Thermocouple Range (aeronautics) Water content Wind tunnel
Zdroj:	Combustion Science and Technology. 77:261-289
ISSN:	1563-521X 0010-2202
DOI:	10.1080/00102209108951731
Popis:	Laboratory-scale experiments on wind-aided firespread across an array of very-small-diameter (1.3-4.4-mm), discrete fuel elements were carried out in a specially designed wind tunnel. The rate of firespread, ty, is inferred from the output of streamwise-disiributed, near-bed-surface thermocouples. The fuel consists of an array of identical, regularly arranged, wooden, toothpick-like Tuel elements, positioned upright in shallow holes drilled in a ceramic substrate. Adoption of this well-defined fuel bed facilitates repetition. Extensive testing suggests that νy ∼ (U/m)1/2 over a wide range of the uniform ambient wind speed U and the fuel-mass distribution m (fuel, per unit planform area of the bed, consumed with firefront passage). The effects on the firespread rate of other parameters investigated and reported include the type of wood species; fuel-element length; fuel-element diameter; fuel-bed width, including streamwise-varyjng width; enhanced moisture content of the substratum and/or fuel; sm...
Databáze:	OpenAIRE
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