Characteristics of compressible flow of supercritical kerosene

• Published in: Acta mechanica Sinica Vol. 28; no. 1; pp. 8 - 13
• Main Authors: Zhong, Feng-Quan, Fan, Xue-Jun, Wang, Jing, Yu, Gong, Li, Jian-Guo
• Format: Journal Article
• Language: English
• Published: Heidelberg The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences 01.02.2012
• Subjects: Classical and Continuum Physics; Computational Intelligence; Engineering; Engineering Fluid Dynamics; Research Paper; Theoretical and Applied Mechanics; 压力测量; 可压缩流; 数值模拟; 温度范围; 特征; 航空煤油; 超临界条件; 超音速流动; Isentropic process; Laval nozzle; Supercritical kerosene; Compressible flow
• ISSN: 0567-7718; 1614-3116
• DOI: 10.1007/s10409-012-0006-x

In this paper, compressible flow of aviation kerosene at supercritical conditions has been studied both numerically and experimentally. The thermophysical properties of supercritical kerosene are calculated using a 10- species surrogate based on the principle of extended corresponding states （ECS）. Isentropic acceleration of supercritical kerosene to subsonic and supersonic speeds has been analyzed numerically. It has been found that the isentropic relationships of supercritical kerosene are significantly dif- ferent from those of ideal gases, A two-stage fuel heating and delivery system is used to heat the kerosene up to a tem- perature of 820 K and pressure of 5.5 MPa with a maximum mass flow rate of 100 g/s. The characteristics of supercritical kerosene flows in a converging-diverging nozzle （Laval nozzle） have been studied experimentally. The results show that stable supersonic flows of kerosene could be established in the temperature range of 730 K-820 K and the measurements in the wall pressure agree with the numerical calculation.