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http://dx.doi.org/10.3795/KSME-B.2004.28.10.1231

Development of an Ejector System for Operation of Chemical Lasers (II) - Optimal Design of the Second-Throat Type Annular Supersonic Ejector -  

Kim Sehoon (한국과학기술원 대학원 항공우주공학전공)
Jin Jungkun (한국과학기술원 대학원 항공우주공학전공)
Kwon Sejin (한국과학기술원 항공우주공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.10, 2004 , pp. 1231-1237 More about this Journal
Abstract
Determination of geometric design parameters of a second-throat type annual supersonic ejector is described. Tested geometric parameters were primary nozzle area ratio, cross-sectional area of second-throat, L/D ratio of second-throat and primary flow injection angle. Varying these four geometric parameters, we build a test matrix made of 81 test conditions, and experimental apparatus was fabricated to accommodate them. For each test condition, the stagnation pressure of primary flow and the static pressure of the secondary flow were measured simultaneously along with their transition to steady operation and finally to unstarting condition. Comparing the performance curve of every case focused on starting pressure, the unstarting pressure and the minimum secondary pressure, we could derive correlations that the parameters have on the performance of the ejector and presented the optimal design method of the ejector. Additional experiments were carried out to find effects of temperature and mass flow rate of the secondary flow.
Keywords
Annual Supersonic Ejector; Second-Throat; Chemical Laser;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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