Pseudoshock combustion regime
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The combustion of fuels flowing with supersonic velocity in a duct of constant cross section is analyzed. Experimental data on the pressure at the duct wall are used to calculate the heat-release rates by a onedimensional procedure that takes into account the specific characteristics of combustion in a pseudoshock. It is shown that the heat-release rate, averaged over the length of the combustion zone and normalized to the maximum possible rate, depends on the ratio of the length of the combustion zone to the pseudoshock length for the isothermal case in flow stagnation up to a Mach number M=1.0 and not on the fuel injection technique or the length of the duct. An approach is suggested for determining the duct geometry in the pseudoshock combustion regime so as to organize the combustion process efficiently as a function of the flow parameters and the physicochemical characteristics of the field, which can be determined from specially designed experiments.
KeywordsMach Number Kerosene Combustion Zone Duct Wall Stagnation Zone
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