| 管内流体的温度脉动相关流量测量实验研究 |
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| 引用本文： | 孙晓东,戴正熙.管内流体的温度脉动相关流量测量实验研究[J].上海交通大学学报,1997,31(2):51-55. |
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| 作者姓名： | 孙晓东 戴正熙 |
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| 基金项目： | 中国船舶工业总公司“八五”国防科技预研资助项目 |
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| 摘 要： | 利用流动流体内固有的温度脉动信号进行流量相关测量的基本原理，讨论了渡越时间测量的方差估计。在此基础上，设计了测量系统的原理样机，以该样机对流量相关测量进行了实验研究。结果表明：利用该样机来实现流量的相关测量是可行的；两热电偶间的距离对测量影响较大；在湍流区的测量结果相对层流更令人满意。
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| 关 键 词： | 温度噪声 管路 流体流动 流量测量 |
Experimental Study on Flow Rate Measurement of Fluid in Tube Using Temperature Fluctuations Cross Correlation Principle |
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| Sun Xiaodong,Dai Zhenxi,Xu Jijun.Experimental Study on Flow Rate Measurement of Fluid in Tube Using Temperature Fluctuations Cross Correlation Principle[J].Journal of Shanghai Jiaotong University,1997,31(2):51-55. |
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| Authors: | Sun Xiaodong Dai Zhenxi Xu Jijun |
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| Institution: | Department of Power Machinery Engineering |
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| Abstract: | By using the intrinsic temperature fluctuations in flowing fluid the basic principle of cross correlation flow rate measurement is presented. The variance estimation of the measurement of transit time is discussed. A prototype of the measurement system is developed. The experimental results show that it is feasible to measure the flow rate by using the prototype. The distance of two thermocouples has great effect on the measurement. The measurement results are more satisfactory in turbulent flow than in laminar one. |
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| Keywords: | temperature noise cross correlation measurement transit time correlation velocity calibrating factor of flow velocity |
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