| 边界层转捩位置测量及其精度的实验研究 |
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| 引用本文： | 王铁城,沈宏霞,徐信学,郑发明.边界层转捩位置测量及其精度的实验研究[J].实验流体力学,1992(3). |
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| 作者姓名： | 王铁城 沈宏霞 徐信学 郑发明 |
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| 作者单位： | 南京航空学院
(王铁城，沈宏霞，徐信学)，南京航空学院(郑发明) |
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| 摘 要： | 以无迎角平板作为模型,用多片表面热膜作为测量元件,在低速风洞中测定边界层转捩位置及其随来流速度变化的规律,并在等精度重复测量的基础上给出边界层转捩特征点位置测量的精度。实验研究的结果表明,本文提出的测定边界层转捩位置及其变化规律的实验技术,能够满足应用性定量实验的需要。
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| 关 键 词： | 边界层转捩 测量 表面热膜技术 |
AN EXPERIMENTAL STUDY ON LOCATION OF BOUNDARY LAYER TRANSITION AND ITS PRECISION OF MEASUREMENT |
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| Wang Tiecheng,Xu Xinxue,Shen Hongxia,Zheng Faming.AN EXPERIMENTAL STUDY ON LOCATION OF BOUNDARY LAYER TRANSITION AND ITS PRECISION OF MEASUREMENT[J].Experiments and Measur in Fluid Mechanics,1992(3). |
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| Authors: | Wang Tiecheng Xu Xinxue Shen Hongxia Zheng Faming |
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| Abstract: | An experimental study was performed to locate boundarylayer transition and predict its relation to air stream velocity.Theexperiments were carried out in a low speed wind tunnel.The multi-piece of surface hot film gages on the surface of a flat plate gavethe RMS values of fluctuating electric voltage.The characteristicpoint of boundary layer transition was located from these results.Theprecision of measurement was obtained from repeated tests.The resultsshow that this experimental technique can fulfill the requirementsof practical quantitative measurements. |
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| Keywords: | boundary layer transition measurement surface hot film gage |
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