Studies of Injection of Jet Fuel at Supercritical Conditions
Studies of Injection of Jet Fuel at Supercritical Conditions
复制标题
DOI：
10.1021/ie0109915
复制
发表时间：
2002-10
影响因子：
4.2
通讯作者：
T. Doungthip;J. Ervin;A. Williams;J. Bento
中科院分区：
文献类型：
--
作者：
T. Doungthip;J. Ervin;A. Williams;J. Bento
在高于400 °C的温度和燃料系统压力下，JP-8和Jet A喷气燃料作为超临界流体存在。在常规飞机（亚临界）条件下工作的燃油喷嘴将液体燃油流雾化成液滴。与在超临界条件下操作的喷嘴相关联的物理喷射和混合机制与在亚临界条件下发生的那些非常不同。目前的研究检查了超临界条件下的燃料流通过一个简单的喷嘴进入一个区域，也是在超临界条件下。本文给出了超临界喷气燃料从一个简单喷嘴进入光学室的纹影图像。使用正癸烷作为替代燃料进行流动的计算流体动力学模拟，因为正癸烷具有与实验中使用的喷气燃料样品的伪临界温度和压力相似的临界温度和压力。计算流体动力学模拟结果与实测结果吻合较好。
At temperatures above 400 °C and at fuel system pressures, JP-8 and Jet A jet fuels exist as supercritical fluids. Fuel nozzles operating under conventional aircraft (subcritical) conditions atomize liquid fuel streams into droplets. The physical injection and mixing mechanisms associated with a nozzle operating under supercritical conditions are very different from those occurring under subcritical conditions. The current research examines the flow of fuel at supercritical conditions through a simple nozzle into a region that is also at supercritical conditions. Schlieren images of supercritical jet fuel exiting a simple nozzle into an optical chamber are presented. Computational fluid dynamics simulations of the flow were performed using n-decane as a surrogate fuel because it has a critical temperature and pressure similar to the pseudo critical temperature and pressure of the jet fuel sample used in the experiments. The results of the computational fluid dynamics simulations and the measurements obtai...