Experimental study of hydrogen combustion zones in a nonisobaric supersonic jet
S.S. Vorontsov, V.A. Zabaykin, A.A. Mishunin, and A.A. Smogolev
Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Pages: 451-459
Abstract
The structure of hydrogen flame combustion zones in an nonisobaric supersonic high-temperature air jet is experimentally studied. Reliability of results obtained under adopted experimental conditions by registering visible emission from the air-hydrogen flame is confirmed. With the help of a high-speed recording system, the dynamics of combustion zones developing in peripheral regions of the flame has been revealed. A direct correlation is shown to exist between the combustion zones in the flame and the gasdynamic structure of the outer nonisobaric air jet. The travel velocity of large-scale combustion zones is estimated. The mechanism of flame-tail instability is unveiled.
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