レーザー研究
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
A Simple Estimation of Flow Parameters in Mixing Gasdynamic Lasers from a Measured Static Pressure
Katushi KITAGAWA
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1987 年 15 巻 10 号 p. 782-788

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When governing equations of a one-dimensional mixing theory are solved in the two limited cases, vibrational-frozen and vibrational-equilibrium flows, actual flow parameters such as static temperature and velocity at a optical cavity region in mixing gasdynamic lasers can be determined from measured static pressure at the cavity point. A measured static temperature at the laser excitation region determined by the present method is 268°K with the theoretical uncertainty of ±1.9%. This value of the temperature is well agreed with a temperature estimated by a rotational population distribution of carbon dioxide molecules. It is revealed from a theoretical consideration that the uncertainty of the flow parameters determinedthis method is less thin ±10% even at a high stagnation temperature (-3000°K) and any higher Mach number at the cavity section.
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© The Laser Society of Japan
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