Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2001.11b
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- Pages.646-651
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- 2001
The Secondary Chamber Pressure Characteristics of Sonic/Supersonic Ejector-Diffuser System
음속/초음속 이젝터 시스템의 2차정체실 압력특성
Abstract
The present study is an experimental work of the sonic/supersonic air ejector-diffuser system. The pressure-time dependence in the secondary chamber of this ejector system is measured to investigate the steady operation of the ejector system. Six different primary nozzles of two sonic nozzles, two supersonic nozzles, petal nozzle, and lobed nozzle are employed to drive the ejector system at the conditions of different operating pressure ratios. Static pressures on the ejector-diffuser walls are to analyze the complicated flows occurring inside the system. The volume of the secondary chamber is changed to investigate the effect on the steady operation. the results obtained show that the volume of the secondary chamber does not affect the steady operation of the ejector-diffuser system but the time-dependent pressure in the secondary chamber is a strong function of the volume of the secondary chamber.