A Coupled Heat Transfer Analysis with Effect of Thermal/Catalytic Cracking for a Regenerative Cooled Scramjet
A coupled heat transfer analysis including thermal/catalytic cracking of aviation kerosene at supercritical pressures was developed for a regenerative cooled scramjet. The internal flow of the scramjet, the coolant flow and the engine wall are calculated and coupled with the assumption of thermal equilibrium. Global models for thermal cracking and for catalytic cracking were introduced and implemented in the analysis. The heat transfer analysis was applied to study a regenerative cooling of a model scramjet with an inlet total temperature of 1600k, a mass flow rate of 1.74kg/s and an inlet Mach number of 5.0S. The results showed that thermal and catalytic cracking both supply extra heat sinks at a fuel temperature exceeding 750—800K due to endothermicity of reaction. An increase in the pressure loss of the coolant flow was observed for the cracking, which can be explained by the decomposition of the kerosene into small molecules. The present analysis including cracking effect is believed to provide more accurate results of regenerative cooling process for scramjet applications.
heat transfer analysis thermal cracking catalytic cracking regenerative cooling scramjet
Fengquan Zhong Xi Wang Lihong Chen Xinyu Chang
Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics Chinese Academy of Sciences,Beijing, Peoples Republic of China, 100190
国际会议
上海
英文
19-26
2011-11-21（万方平台首次上网日期，不代表论文的发表时间）