摘要
本文针对超燃冲压发动机再生冷却系统运行条件,实验研究了大庆RP-3煤油在超临界压力下的流动和传热特性,目的在于研究煤油在各种工况下的流动参数变化以及对流传热规律。煤油通过二级煤油加热/输运系统加热,试验的煤油压力约2.6M~5.0MPa,油温约300~800K。相应的壁面热流密度为10~300kW/m2。通过油温与壁温的同步测量,结合非定常传热分析,获得了超临界压力下、亚/超临界温度范围内煤油的流动和传热物理参量的变化曲线。
In this paper,characteristics of the convective heat transfer of aviation kerosene were studied experimentally under supercritical pressure according to the conditions in a regenerative cooling system for the scramjet application. A two-stage kerosene heating system was used to heat the kerosene up to temperature of 300-800K at pressures of 2.6-5.0 MPa. The corresponding wall heat flux varied from 10 kW/m^2 to 300kW/m^2. By simultaneously measurements of the local fuel and wall temperatures,the heat transfer characteristics of aviation kerosene under supercritical pressures and both sub-critical and supercritical temperatures were determined using the method of unsteady heat-transfer analysis.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2010年第2期230-234,共5页
Journal of Propulsion Technology
基金
国家自然科学基金项目(10672169
10742003
10621202)
关键词
航空煤油
超临界态
对流传热
Aviation kerosene
Supercritical state
Convective heat transfer