PSEUDOSHOCK COMBUSTION REGIME

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 one -dimensional procedure that takes into account the specific characteri stics of combustion in a pseudoshock. It is shown that the heat-releas e rate, averaged over the length of the combustion zone and normalized to the maximum possible rate, depends on the ratio of the length of t he combustion zone to the pseudoshock length for the isothermal case i n flow stagnation up to a Mach number M = 1.0 and not on the fuel inje ction technique or the length of the duct. An approach is suggested fo r determining the duct geometry in the pseudoshock combustion regime s o as to organize the combustion process efficiently as a function of t he flow parameters and the physicochemical characteristics of the fiel d, which can be determined from specially designed experiments.