ESTIMATING COMBUSTOR FLAME TEMPERATURE BASED ON FREQUENCY OF COMBUSTOR DYNAMICS TRANSVERSE MODE.

摘要

A method of determining the temperature inside a combustion liner without making a direct measurement of the actual temperature. The technique is based on a measurement of the frequency of one of the transverse acoustic modes occurring inside the combustion chamber. The frequency is determined from the transverse geometric dimensions of the combustion chamber and the speed of sound in the gas inside the combustion chamber .The speed of sound in the gas is know from thermodynamics to be a function of gas temperature and gas properties. Thus, from a measurement of the resonant frequency and knowing the combustor dimensions and gas properties, the temperature can be determined with accuracy.