RECENT MEASUREMENTS OF FLAME ACCELERATION IN SEMICONFINED GEOMETRIES

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Feb 22, 2014 (3 years and 5 months ago)

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RECENT MEASUREMENTS OF FLAME ACCELERATION

IN SEMICONFINED GEOMETRIES

ABOUARAB, TW; ENAYET, MM; KAMEL, MM

BUTTERWORTH
-
HEINEMANN LTD, JOURNAL OF LOSS PREVENTION IN THE

PROCESS INDUSTRIES; pp: 202
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206; Vol: 4

King Fahd University of Petroleum & Minerals

http://www.kfupm.edu.sa

Summary

Turbulent premixed combustion under certain conditions may lead to large flame

speeds sufficient to cause significant damage to nearby structures.Experiments, both

large and small scale, have confirmed that obstructions cause severe flame

acceleration to occur.In these cases, flame speeds as high as 800 m s
-
1 may be

achieved.In this work experimental investigation of some factors affecting flame

acceleration in a semiconfined channel has been carried out.The experimental facility

and the developed ionization gap measuring technique are also described.It has been

found that the presence of obstacles, degree of confinement, height of fuel
-
air cloud

(FAC), as well as fuel concentration gradient in the FAC have profound effects on the

rate at which the flame accelerates.Finally, consideration of the flame acceleration as

a possible mechanism for the transition to detonation will be discussed.

For pre
-
prints please write to:
abstracts@kfupm.edu.sa

Copyright: King Fahd University of Petroleum & Minerals;

http://www.kfupm.edu.sa