| 一种简单方便的高精度非接触式阻力测量方法 |
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| 引用本文： | 李克文,连淇祥.一种简单方便的高精度非接触式阻力测量方法[J].实验流体力学,1992(4). |
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| 作者姓名： | 李克文 连淇祥 |
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| 作者单位： | 北京大学
(李克文)，北京航空航天大学(连淇祥) |
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| 摘 要： | 根据力学原理研究设计了一种新的平板整体摩擦阻力测量方法——位移传感器测力法,并依此制作了一套高精度非接触式测力系统。从理论和实验上对此法的准确性、可靠性、灵敏度和误差范围进行了估计、对比和分析。另外,对此系统的静态和动态测量性能也分别进行了实验研究。实验结果表明这种方法具有灵敏度高、准确度好、误差小、测力量程宽、不干扰流场、易于装卸和移动等优点。
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| 关 键 词： | 非接触 测量 传感器 阻力 湍流边界层 |
A SIMPLE AND EASY METHOD FOR DRAG MEASUREMENT WITH HIGH PRECISION AND WITHOUT TOUCHING |
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| Li Kewen.A SIMPLE AND EASY METHOD FOR DRAG MEASUREMENT WITH HIGH PRECISION AND WITHOUT TOUCHING[J].Experiments and Measur in Fluid Mechanics,1992(4). |
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| Authors: | Li Kewen |
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| Institution: | Li Kewen(Beijing University)Lian Qixiang(Beijing University of Aeronautics & Astronautics) |
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| Abstract: | A new method to measure the total skin friction(drag)of a flat-plate,using a displacement sensor,was designed according toa mechanical principle,and an elastic balance to measure drag withhigh precision and without touching was made.The estimation,anal-ysis and comparison both in theory and experiment were made for it'saccuracy,reliability,sensitivity and range of error.The experimentalinvestigations were carried out to examine both the static and the dy-namic performance of it in measuring drag.The test results show thatthe method has following advantages:high sensitivity,well accuracy,small error,wide range,uninfluence on flow field,conveyance withease. |
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| Keywords: | untouchable measurement displacement sensor drag turbulent boundary layer |
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