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Modeling of Injector Orifice for the Flow Analysis in LOX Manifold of Liquid Rocket  

Kim, Hak-Jong (건국대학교 기계공학과)
Byun, Yung-Hwan (건국대학교 항공우주공학과)
Cho, Won-Kook (한국항공우주연구원)
Seol, Woo-Seok (한국항공우주연구원)
Na, Yang (건국대학교 기계공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.8, no.2, 2004 , pp. 1-9 More about this Journal
Abstract
The flow in the LOX manifold of liquid rocket (KSR-III) has been analyzed using a CAE technique with an objective of modeling injector orifices in order to reduce the computational cost for the flow analysis without much losing the accuracy of capturing the flow physics. The numerical result shows that the flow just above the injector orifices is not uniformly distributed in terms of pressure and mass flow rate in case pre-distributors are not equipped inside the manifold. This non-uniformity of mass flux is attributed to the presence of large-scale flow patterns. Several boundary conditions which were designed to effectively replace the presence of injector orifices have been tested and it was found that a simple modeling can be possible by mimicking the actual shape of the orifices.
Keywords
LOX Manifold; Modeling for Injector Orifice; Pre-Distributor;
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