Mathematical Model Development and Numerical Validation of Supercritical-Pressure Fluid Flows and Heat Transfer of Aviation Kerosene with Endothermic Pyrolysis

摘要：

　　The regenerative cooling technology is a promising approach for effective thermal protection of aerospace propulsion and industrial power-generation systems.In this paper,a mathematical model has been developed to examine fluid flows and heat transfer of aviation kerosene with endothermic pyrolytic reactions at a supercritical pressure of 5 MPa.A chemical reaction mechanism consisting of 18 species and 24 elementary reactions is employed to account for fuel pyrolysis.This model is validated against experimental data,including fluid temperature,fuel conversion rate,species production rate,and chemical heat sink etc.,fully verifying its accuracy and reliability.The mathematical model is then applied for a preliminary study of the supercritical-pressure fluid flows and heat transfer of RP-3 with endothermic pyrolysis in a mini cooling tube.Results show that the endothermic pyrolytic chemical reactions can significantly enhance heat transfer rate,particularly in the high-temperature region.Strong variations of the thermophysical properties also play an important role in supercritical-pressure fluid flows and heat transfer.

关键词： supercritical pressures convective heat transfer endothermic pyrolysis regenerative cooling

作者: Keke Xu Hua Meng

作者单位: School of Aeronautics and Astronautics,Zhejiang University,Hangzhou,Zhejiang,310027,P.R.CHINA;Collab School of Aeronautics and Astronautics,Zhejiang University,Hangzhou,Zhejiang,310027,P.R.CHINA

会议类型: 国际会议

会议名称: The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2014-09-15（万方平台首次上网日期，不代表论文的发表时间）