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http://dx.doi.org/10.6108/KSPE.2014.18.4.081

1-D Analysis of Tandem-ejector for the Engine-bay Ventilation  

Im, Ju Hyun (Advanced Propulsion Technology Center, Agency for Defense Development)
Kim, Myung Ho (Advanced Propulsion Technology Center, Agency for Defense Development)
Kim, Yeong Ryeon (Advanced Propulsion Technology Center, Agency for Defense Development)
Jun, Sang In (Aerospace Engineering Team, Korean Air)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.18, no.4, 2014 , pp. 81-89 More about this Journal
Abstract
Tandem-ejector has been devised for engine-bay cooling. In this study, 1-D model has been developed to analyze Tandem-ejector. In the model, the primary, the secondary and the tertiary flow conditions have been analyzed with isentropic process. The mixing process has been analyzed with conservation laws based on the control volume analysis. The total pressure loss of the primary flow has been analyzed under the matching condition between the static pressure of Tandem-ejector discharge flow and atmospheric pressure. Consequently, 1-D model can predict Tandem-ejector performance accurately and provide the performance map.
Keywords
Engine-bay Ventilation System; Tandem-ejector; Mixing; Conservation Law; Control Volume Analysis;
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