探头式结冰探测器安装位置分析  

Analysis on installation location of probe-style ice detectors

作　　者：朱程香[1] 孙志国[1] 付斌[1] 朱春玲[1] 

机构地区：[1]南京航空航天大学航空宇航学院,南京210016

出　　处：《航空动力学报》2011年第12期2676-2683,共8页Journal of Aerospace Power

基　　金：国家自然科学基金(10972106)

摘　　要：通过求解雷诺时均Navier-Stokes(N-S)方程获得空气流场,采用欧拉法求解水滴运动场获得水滴运动轨迹.通过计算来流液态水含量等值线距离部件表面的垂直距离,获得部件不同位置上的广义水滴遮蔽高度.研究了不同飞行条件和气象条件下的广义水滴遮蔽高度大小.根据探头式结冰探测器安装位置要求确定探头式结冰探测器的合理安装区域.通过分析不同的状态参数对广义水滴遮蔽高度的影响,为结冰探测器安装位置计算状态参数的选取提供了数据支持.Navier-Stokes（N-S）equations were solved to obtain the air-flow field around the geometry,and Eulerian method was used to obtain the water droplet trajectories.Based on these results,generalized shadow height of water droplet could be calculated by computing the vertical distance between the geometry and the freestream liquid water content（LWC） isoline.Generalized shadow height of water droplet under various flight and meteorological conditions were calculated.Locations of probe-style ice detectors were determined according to the installation requirement.With the results,effects of various flight and meteorological parameters on generalized shadow height of water droplet were analyzed,providing a guidance for choosing appropriate calculation conditions for the installation location of ice detector.

关 键 词：结冰探测器 水滴遮蔽高度 安装位置 水滴轨迹 欧拉法 空气流场 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]