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| 1 | Effects of flow parameters on thermal performance of an inner-liner anti-icing system with jets impingement heat transfer显示文摘The multiple jets impingement heat transfer is widely applied in the wing anti-icing system.It is challenging to apply the similarity criterion to carry out the anti-icing experiments due to the complex flow and heat transfer behavior.In the present study,the full-scale slat model is used to carry out anti-icing experimental researches in a 2 m×3 m icing wind tunnel of China Aerodynamics Research and Development Center.The effects of icing parameters Liquid Water Content(LWC)and Median Volume Diameter(MVD)and hot air parameters(mass flow rate and temperature)on the thermal performance of an inner-liner anti-icing system with jets impingement heat transfer are studied.The effects of the experimental parameters are analyzed in detail by combining impingement and evaporation heat transfer mechanisms.The impingement hot air mass flow rate dramatically affects the heat transfer performance of the impingement stagnation region within the range of the experimental parameters.The temperature of impingement hot air and that of wing skin are approximately linear correlated.The experimental results show the effects of LWC and MVD on water film formation and runback ice accretion.The formation of water film is analyzed by an analytical method based on the wing skin temperature difference of dry and wet air conditions. | Zhiqiang GUO Mei ZHENG Qian YANG Xiaofeng GUO Wei DONG | 2021 | Chinese Journal of Aeronautics2021，34，9： | 1 |
| 2 | 冠齿喷管射流冲击半圆形靶面的对流换热显示文摘针对具有相同相对曲率(d/D=0.1)的凹形和凸形半圆柱靶面,在典型的雷诺数(Re=5000~12000)和无因次冲击距离(H/d=1~8)下进行了射流冲击对流换热的实验研究,同时在特定的射流雷诺数下进行了射流冲击大涡模拟分析,以揭示冠齿喷管在不同形状靶面上的强化传热作用机制。研究结果表明:射流喷管和靶面形状对于射流驻点附近的流场和对流换热具有显著的影响,冠齿喷管出口诱导的流向涡改变了圆形射流发展中的轴对称环形涡内在特征,无论是凹形还是凸形靶面,冠齿喷管相对于圆形喷管都体现出一定的强化射流传热效果;与凸形靶面相比,射流冲击凹形靶面受到凹腔内部的回流影响,导致冠齿喷管射流冲击对流换热的降低。 | 吕元伟 张靖周 单勇 孙文静 | 2021 | 航空学报2021，42，7： | 0 |
| 3 | 翅片阵列对翼面的冲击换热影响数值模拟研究显示文摘曲面冲击换热在飞机机翼前缘防除冰上有着广泛应用.为了进一步提高翼型前缘防除冰性能,采用数值模拟依次探索了不同翅片阵列在平板和曲面上的冲击换热特性.平板模型的翅片阵列包含8片、12片直翅片以及12片弯翅片3种结构;曲面模型包括8片短翅片和8片长翅片两种阵列结构.仿真结果表明:在平板和翼型曲面上添加翅片阵列可以显著提高模型在不同雷诺数下的射流冲击换热性能;与无翅片相比,翼面上的换热效果整体提升高达4%~10%,其中在驻点位置处的强化换热效果最为明显.深入分析发现,引入的翅片阵列一方面增大了强化换热面积,同时也改变了冲击射流流动结构,从而增强了射流冲击换热的效果. | 张天伦 王克辰 张栩 周文武 | 2023 | 上海交通大学学报2023，57，1： | 0 |
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