| 测量低密度气流速度和运动激波马赫数的火花放电法 |
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| 引用本文： | 尹协振,姚久成.测量低密度气流速度和运动激波马赫数的火花放电法[J].实验力学,1987,2(1). |
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| 作者姓名： | 尹协振 姚久成 |
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| 作者单位： | 中国科技大学，中国科技大学 |
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| 摘 要： | 本文在讨论了各种测量气流速度的方法,特别是Miller的放电法基础上,提出了一种测量低密度流场气流速度和运动激波马赫数的改进方法。本方法采用双曝光技术,有助于提高测量精度;在结构上和电路上的改进,克服了低密度流场中漏电问题。该方法适用于气流速度1200m/s以上,密度约0.05kg/cm~3的高速瞬态流场中的气流速度和运动激波马赫数的测量。
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| 关 键 词： | 气流 激波 火花放电 |
A Spark Discharge Method for Measuring Flow Velocity and Moving Shock Mach Number in Low Density Flow Field |
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| Yin Xiezhen Yao Jiucheng.A Spark Discharge Method for Measuring Flow Velocity and Moving Shock Mach Number in Low Density Flow Field[J].Journal of Experimental Mechanics,1987,2(1). |
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| Authors: | Yin Xiezhen Yao Jiucheng |
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| Institution: | University of Science and Technology of China |
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| Abstract: | An improved method for measuring flow velocity and moving shock Mach number in low density flow field was presented on the basis of discussing various methods of measuring flow velosity, particularly, Miller's 1] discharge method. The accuracy of measurements was improved by using double exposure technology and problem of electric leakage in low density field was overcome by improvement in structure and electric circuit in this paper. The method can be used in flow field of flow speed above 1200 m/s and density below 0.005 kg/m~3. |
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| Keywords: | gas flow shock wave spark discharge |
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