MEASUREMENT OF TEMPERATURE IN GASEOUS DETONATIONS BY MONOCHROMATIC RADIATION PYROMETRY

摘要

The infrared monochromatic radiation (IMRA). method of. gas temperature. measurement was applied to determination of temperature in gaseous detonations. A detonation tube facility was constructed in which the infrared spectral emittance and absorptance of a detonation wave could be measured through infrared-transparent windows. A high speed infrared monochromatic pyrometer, which has time resolution of better than 10 microseconds, was used to make the temperature measurements. For. hydrogen-oxygen, propane-oxygen, and propane oxygen-nitrogen mixtures, initially at one atmosphere pressure the measured temperatures agreed with theoretical values cal culated oh the basis of the Chapman-Jouget theory. The measured temperature was independent of spectral wavelength, demonstrating that thermal equilibrium was attained.