| 变湍流度时翼型边界层及近场尾流的法向湍流特性初步试验研究 |
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| 引用本文： | 白存儒,何克敏,郭渠渝,屠兴.变湍流度时翼型边界层及近场尾流的法向湍流特性初步试验研究[J].实验流体力学,1998(4). |
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| 作者姓名： | 白存儒 何克敏 郭渠渝 屠兴 |
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| 作者单位： | 西北工业大学 |
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| 摘 要： | 简述了湍流度对边界层及近场尾流时均特性和边界层转捩位置的影响，讨论了流向和法向湍流特性分布规律，并着重分析了湍流度对法向湍流特性的影响。结果表明，法向湍流强度及雷诺正应力沿流向分段性更为明显，且法向与流向湍流参量之比的特征值有一定规律性。
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| 关 键 词： | 翼型 尾流 边界层 变湍流度 湍流特性 |
EXPERIMENTAL INVESTIGATION OF NORMAL TURBULENCE CHARACTERISTICS OF BOUNDARY LAYER AND NEAR WAKE OF AN AIRFOIL AT DIFFERENT TURBULENCE LEVEL |
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| Abstract: | This paper decribes the effect of turbulence level on the time average characteristics of the boundary layer and near wake of an airfoil and the transition point of the boundary layer.The distributions of turbulence characteristics in normal and stream direction are discussed.The effect of turbulence on the normal turbulence characteristics is also analyzed.Test results has shown,the different region of the normal turbulent intensity and normal Reynolds stress in stream direction is obvious,and the ratio of normal and stream turbulent quantity has a certain rule. |
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| Keywords: | airfoil wake boundary layer varying turbulence turbulence characteristics |
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