| 地效飞行器地面巡航气动性能数值模拟及分析 |
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| 引用本文： | 屈秋林,刘沛清.地效飞行器地面巡航气动性能数值模拟及分析[J].航空学报,2006,27(1):16-22. |
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| 作者姓名： | 屈秋林 刘沛清 |
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| 作者单位： | 北京航空航天大学,航空科学与工程学院,北京,100083 |
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| 摘 要： | 采用有限体积方法求解定常可压缩流动的质量加权平均N-S方程和标准k-ε湍流模型,模拟地效飞行器地面巡航全机流场。计算结果给出了地效飞行器气动性能随飞行高度和迎角的变化规律;采用镜像法理想涡模型分析了地面效应对翼尖涡位置和气流下洗角的影响;详细阐明了地面效应对诱导阻力的影响规律。
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| 关 键 词： | 地效飞行器 翼尖涡 下洗角 诱导阻力 数值模拟 理想涡模型 |
| 文章编号： | 1000-6893(2006)01-0016-07 |
| 修稿时间： | 2004年10月8日 |
Numerical Simulation and Analysis of Aerodynamics of WIG Craft in Cruise over Ground |
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| QU Qiu-lin,LIU Pei-qing.Numerical Simulation and Analysis of Aerodynamics of WIG Craft in Cruise over Ground[J].Acta Aeronautica et Astronautica Sinica,2006,27(1):16-22. |
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| Authors: | QU Qiu-lin LIU Pei-qing |
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| Institution: | School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Numerical results are presented by simulating the flow field around a WIG (Wing-in-ground effect) craft over ground. The Favre-averaged N-S equation of steady compressible flow and the standard k-ε turbulence model are solved by the finite-volume method. The effects of flight height and incidence angle on aerodynamics of WIG craft are provided. Image method ideal vortex model is used for the analysis of how ground effect impacts wingtip vortex and airflow downwash angle. The influence of ground effect on induced drag is analyzed in detail. |
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| Keywords: | WIG craft wingtip vortex downwash angle induced drag numerical simulation ideal vortex model |
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