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An experimental investigation on heat transfer performance of rotating anti-/deicing component

机译：旋转抗/除冰组分传热性能的实验研究

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摘要

Ice formation and accumulation on helicopter rotor seriously threaten the flight safety. In this paper, a rotary spray icing experimental study was conducted to investigate the heat transfer characteristics of electro-thermal anti-/deicing component for helicopter rotor. A scaled anti-/deicing component sample was manufactured and exposed under typical rime icing conditions for a comparative study. During the experiments, ice knife method was used to measure the uniformity of supercooled water droplets, and the dynamic ice accretion process on the sample was recorded. It was found that under the typical rime conditions, the relationship between the icing thickness of rotor surface and the distance from the icing area to the rotating center was linear. The temperature of rotor surface far away from the rotating center was the lowest, due to the maximum convection heat transfer coefficient and the maximum heat loss caused by the maximum velocity of flow field. Through the simulation experiment, the simulation results were in good agreement with the experimental data, and the maximum error between simulation data and experimental data was 1.46%, which verifying the correctness of the experimental results and the rationality and reliability of the test equipment.
机译：直升机转子上的冰形成和积累严重威胁到飞行安全。本文进行了旋转喷涂糖化实验研究，研究了直升机转子电热抗/除胶组分的传热特性。制造缩放的抗/除去组分样品并在典型的霜掺杂条件下进行比较研究。在实验期间，使用冰刀法测量过冷水滴的均匀性，并记录样品上的动态冰增冰过程。结果发现，在典型的膛条件下，转子表面的结冰厚度与冰布到旋转中心的距离之间的关系是线性的。由于最大的对流传热系数和由流场的最大速度引起的最大反向传热系数和最大热量损失，转子表面远离旋转中心的温度最低。通过模拟实验，仿真结果与实验数据吻合良好，仿真数据与实验数据之间的最大误差为1.46％，这验证了实验结果的正确性以及测试设备的合理性和可靠性。

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