Progress in Flight Physics 2012
DOI: 10.1051/eucass/201203231
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Experimental study and numerical modeling of vibrational oxygen temperature profiles behind a strong shock wave front

Abstract: The evolution of oxygen molecule vibrational temperature behind the front of a shock wave was studied at shock wave velocities 3 4.5 km/s and gas pressure ahead of the shock front 1 5 Torr. The results of vibrational temperature measurement con¦rmed the conception of separation of vibrational relaxation and dissociation zones behind the shock wave front at T ≤ 6500 K. It is observed that at T = 6500 10 500 K the vibrational temperature decreased in comparison with its value characterized by the achievement of … Show more

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Cited by 9 publications
(11 citation statements)
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“…On the oscillograms, the temporal interval of the kinetic region behind the shock front shortens. Earlier, it was revealed [2] that in the temperature range T 0 = 3500 6500 K, there is agreement between the temperature T 1 calculated under the assumption of vibrational-translational equilibrium before the dissociation onset and the temperature T max v measured at the absorption maximum (Fig. 2).…”
Section: Results Of the Measurements Of The Vibrational Temperaturesupporting
confidence: 73%
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“…On the oscillograms, the temporal interval of the kinetic region behind the shock front shortens. Earlier, it was revealed [2] that in the temperature range T 0 = 3500 6500 K, there is agreement between the temperature T 1 calculated under the assumption of vibrational-translational equilibrium before the dissociation onset and the temperature T max v measured at the absorption maximum (Fig. 2).…”
Section: Results Of the Measurements Of The Vibrational Temperaturesupporting
confidence: 73%
“…The technique of oxygen vibrational temperature measurement behind the shock front is based on the measurement of oxygen absorption from di¨erent vibrational levels and comparison of measured absorption with detailed absorption spectra calculated for vibrational (T v ) and translational (T ) temperatures up to 10,000 K. This technique was described earlier in [2] and was employed using several wavelengths from 200 to 260 nm. The test gas was undiluted high purity oxygen (99.999%, Linde Production) with the initial pressures ranging from 1 to 2 Torr.…”
Section: Results Of the Measurements Of The Vibrational Temperaturementioning
confidence: 99%
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