Total Temperature Measurements Using a Rearward Facing Probe in Supercool Liquid Droplet and Ice Crystal Clouds
Total Temperature Measurements Using a Rearward Facing Probe in Supercool Liquid Droplet and Ice Crystal Clouds
复制标题
使用后向探头测量超冷液滴和冰晶云中的总温度
DOI：
10.2514/6.2018-3970
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Tadas P. Bartkus
中科院分区：
文献类型：
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作者：
J. Agui;P. Struk;Tadas P. Bartkus
本文对大气冰云流动中局地总温、总湿的实验测量结果进行了分析。这些测量结果是在NASA推进系统实验室的一系列测试中获得的。测试中使用的探头被称为后向探头，其设计用于减轻积冰和摄入探头的污染影响。这些数据为冰云和大气流动的相互作用提供了重要的见解。对于大多数测试运行，发现作为相互作用的结果，温度在0.6至2.8 ℃范围内下降，水蒸气上升高达1.5 g/kg。在某些非常低的温度或高的TWC条件下，与云的相互作用产生了气流的变暖。喷雾液滴和气流之间的蒸发和对流传热机制的基础上的热模型与实验数据吻合良好。文中详细分析了探测器在各种气流、热力学和云条件下的响应。
This paper presents an analysis of local total temperature and humidity experimental measurement taken in atmospheric ice cloud flows. The measurements were obtained in a series of tests in NASA’s Propulsion Systems Laboratory. The probe used in the tests is referred to as the Rearward Facing Probe which was designed to mitigate the contamination effects of ice accretion and ingestion into the probe. The data provided important insights in the interaction of the ice cloud and the atmospheric flow. For the majority of the test runs, small temperature drops in the range of 0.6 to 2.8 0C and up to 1.5 g/kg of water vapor rise were found as a result of the interaction. Under certain very low temperature or high TWC conditions, the interaction with the cloud produced a warming of the airflow. A thermal model based on evaporative and convective heat transfer mechanisms between the spray droplets and the airflow showed good agreement with the experimental data. Detailed analyses of the response of the probe under various flow, thermodynamic, and cloud conditions, are provided in the paper.