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Axisymmetric Thermal Analysis of 3D Regenerative Cooling System  

Kim Sung-In (한국원자력연구소 유체공학연구부)
Park Seung-O (한국과학기술원 항공우주공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.10, no.2, 2006 , pp. 53-61 More about this Journal
Abstract
Axisymmetric numerical thermal analysis for a 3-dimensional regenerative cooling system in a rocket engine is carried out. To predict the accurate heat transfer with the stiff temperature distribution, several tests have been conducted for the grid size, the properties variation of the coolant and the combustion gas depending on temperature. The axisymmetric heat flux model is defined using fin efficiencies and is designed to be equivalent to the heat flux of the 3-dimensional coolant channel. For comparison purpose, the 1-dimensional analysis using Bartz equation is also conducted. The performance of the present model in predicting the cooling characteristics of a 3-dimensional regenerative cooling system is compared with the 3-dimensional results of RTE(Rocket Thermal Evaluation). It is found that the present method predicts much closer results to those of RTE code than 1-dimensional analysis.
Keywords
Regenerative cooling system; Heat transfer; Fin efficiency; Rocket engine; Numerical simulation;
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