Ice-Crystal Icing Accretion Studies at the NASA Propulsion Systems Laboratory
Ice-Crystal Icing Accretion Studies at the NASA Propulsion Systems Laboratory
复制标题
美国宇航局推进系统实验室的冰晶积冰研究
DOI：
10.4271/2019-01-1921
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
J. Tsao
中科院分区：
文献类型：
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作者：
P. Struk;J. Agui;T. Ratvasky;M. King;Tadas P. Bartkus;J. Tsao
本文描述了2018年6月在NASA推进系统实验室进行的冰晶结冰实验。该试验在不同的试验条件下产生了翼型上的冰形数据，这些试验条件类似于涡轮风扇喷气发动机压气机区域内的试验条件。混合相结冰的条件下产生的部分冻结的水喷雾使用的相对湿度的流量作为主要参数来控制冻结。本文介绍了冰形数据和相关条件，包括压力，速度，温度，湿度，总含水量，融化率，和粒度分布。该测试采用了一种新的仪器穿越系统，可以对流量和云进行调查。这项工作的目的是提供实验的冰形数据和相关的条件，以帮助开发和验证冰晶积冰模型。结果支持以前的实验观测的最小熔化比阈值的吸积发生以及存在的高原地区的结冰的严重程度是高的熔化比的范围。然而，在冰晶结冰文献中建议的熔化比的最大极限没有被观察到，这也许是由于在这些条件下水的一些过冷的可能性而复杂化的。
This paper describes an ice-crystal icing experiment conducted at the NASA Propulsion System Laboratory during June 2018. This test produced ice shape data on an airfoil for different test conditions similar to those inside the compressor region of a turbo-fan jet engine. Mixed-phase icing conditions were generated by partially freezing out a water spray using the relative humidity of flow as the primary parameter to control freeze-out. The paper presents the ice shape data and associated conditions which include pressure, velocity, temperature, humidity, total water content, melt ratio, and particle size distribution. The test featured a new instrument traversing system which allowed surveys of the flow and cloud. The purpose of this work was to provide experimental ice shape data and associated conditions to help develop and validate ice-crystal icing accretion models. The results support previous experimental observations of a minimum melt-ratio threshold for accretion to occur as well as the existence of a plateau region where the icing severity is high for a range of melt ratios. However, a maximum limit for melt ratio, which is suggested in the ice crystal icing literature, was not observed perhaps complicated by the potential for some supercooling of the water at these conditions.
DOI：
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发表时间：
2008
期刊：
History and Philosophy of Science No.21
影响因子：
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作者：
岡本拓司;Takuji OKAMOTO
通讯作者：
Takuji OKAMOTO
加拿大国家研究委员会
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