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Effects of convection and radiation ...

Honda, Linton Kaneki.

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Effects of convection and radiation on flame spread over solid fuel beds.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Effects of convection and radiation on flame spread over solid fuel beds./
Author:	Honda, Linton Kaneki.
Description:	150 p.
Notes:	Source: Dissertation Abstracts International, Volume: 62-09, Section: B, page: 4184.
Contained By:	Dissertation Abstracts International62-09B.
Subject:	Engineering, Mechanical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3027724
ISBN:	0493397817

Effects of convection and radiation on flame spread over solid fuel beds.
Honda, Linton Kaneki.

Effects of convection and radiation on flame spread over solid fuel beds. - 150 p.

Source: Dissertation Abstracts International, Volume: 62-09, Section: B, page: 4184.

Thesis (Ph.D.)--University of Southern California, 2001.

The effects of atmosphere composition and the convection environment (downward (opposed buoyant flow), upward (concurrent buoyant flow), or microgravity (negligible buoyant flow)) on the flame spread rate (Sf) over thin solid fuel beds were measured and compared to theoretical predictions.

ISBN: 0493397817Subjects--Topical Terms:

783786
Engineering, Mechanical.

Effects of convection and radiation on flame spread over solid fuel beds.
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020 $a 0493397817
035 $a (UnM)AAI3027724
035 $a AAI3027724
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100 1 $a Honda, Linton Kaneki. $3 1928037
245 1 0 $a Effects of convection and radiation on flame spread over solid fuel beds.
300 $a 150 p.
500 $a Source: Dissertation Abstracts International, Volume: 62-09, Section: B, page: 4184.
500 $a Adviser: Paul Ronney.
502 $a Thesis (Ph.D.)--University of Southern California, 2001.
520 $a The effects of atmosphere composition and the convection environment (downward (opposed buoyant flow), upward (concurrent buoyant flow), or microgravity (negligible buoyant flow)) on the flame spread rate (Sf) over thin solid fuel beds were measured and compared to theoretical predictions.
520 $a For downward and microgravity (mug) flame spread, two modifications to the standard air atmosphere were considered. First, the effect of diluent type on Sf was studied by comparing results using He, N2, Ar, CO2, and SF6 diluents. Like prior studies in N 2 diluent, for He, N2, or Ar diluents it was found that downward Sf was larger than the mug Sf, however, for CO 2 diluent, downward Sf was slightly lower than mug S f and for SF6 diluent, the downward Sf was much lower than mug Sf. Moreover (unlike He, N 2, or Ar), for CO2 and especially SF6 diluents the minimum O2 concentration required to support flame spread at mug was lower than the minimum concentration for downward spread at 1g (for SF 6, the mug limit was even lower than the upward limit). This behavior is proposed to be a result of reabsorption of radiation emitted from the gases. Secondly, the effects of sub-flammability-limit concentrations of a gaseous fuel (CO or CH4) were measured and compared to an existing theoretical model that was extended to mug conditions. The agreement between the model and experiment is reasonable. Notably, both model and experiment show that the effect of added gaseous fuel is greater at mug than for downward spread at 1g.
520 $a For upward flame spread, steady spread was found under conditions where heat and momentum losses to the sides of the fuel sample or surface radiative losses were significant. These losses are argued to be unavoidable because the flame length grows until these losses balance the heat generation. By equating heat generation and losses, approximate predictions of spread rates were obtained. Experiments over a large range of Grashof number were performed and generally support the validity of the proposed mechanisms.
590 $a School code: 0208.
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0548
710 2 0 $a University of Southern California. $3 700129
773 0 $t Dissertation Abstracts International $g 62-09B.
790 1 0 $a Ronney, Paul, $e advisor
790 $a 0208
791 $a Ph.D.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3027724