대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2002년도 학술대회지
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- Pages.135-138
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- 2002
화학레이저 압력회복을 위한 축소형 이젝터의 성능변수
Parametric Study of Subscale Ejector for Pressure Recovery of Chemical Lasers
- 발행 : 2002.08.01
초록
High-speed ejection of burnt gases from the resonator cavity is essential for performance optimization of the chemical laser system. Additionally, to maintain the population of lasing species at a level for maximum optical power, the pressure within the cavity must be of order of 10 torr. In the present study, a small-scale ejector was designed and built for parametric study of its performance. High-pressure air was used as a motive gas. Measurements include schlieren visualization and pressure distribution trace near the ejector nozzle and along the diffuser downstream of the ejector. preliminary tests showed performance of the ejector is a function of parameters including mass flow rate and stagnation pressure of the motive gas, ejector nozzle area ratio, throat area of the diffuser downstream of the ejector.