| 梯度相关法测量流体速度与流量的理论及应用研究 |
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| 引用本文： | 宿成基,陆志明,丁洪河,龚世璋. 梯度相关法测量流体速度与流量的理论及应用研究[J]. 核科学与工程, 1995, 0(4) |
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| 作者姓名： | 宿成基 陆志明 丁洪河 龚世璋 |
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| 作者单位： | 哈尔滨工程大学，上海大学 |
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| 摘 要： | 介绍了一种用于测量流体速度与流量的新型测试技术－梯度相关法。通过对非接触式流体测量模型的进一步探讨，提出了新的传感器设置与信号处理方法，使得利用相关法直接测量流体的平均流速成为可能。气－固两相流的实验结果证明了上述理论与实际相符。
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| 关 键 词： | 梯度相关，电容传感器，气－固两相流 |
STUDY ON THEROY AND APPLICATION OF A CORRELATION GRADIENT METHOD FOR MEASURING SPEED AND MASS FLOW |
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| XU CHENGJI,LU ZHIMING,DING HONGHE. STUDY ON THEROY AND APPLICATION OF A CORRELATION GRADIENT METHOD FOR MEASURING SPEED AND MASS FLOW[J]. Chinese Journal of Nuclear Science and Engineering, 1995, 0(4) |
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| Authors: | XU CHENGJI LU ZHIMING DING HONGHE |
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| Affiliation: | XU CHENGJI;LU ZHIMING;DING HONGHE(Harbin Engineering University)GONG SHIZHANG(Shanghai University) |
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| Abstract: | The tranist time correlation method is sensitive both to flow profile and to turbulence, lead-ing to unavoidable uncertainties in application. This paper presents a new correclation gradientmethod, which outlines a theory of non-intrusive meaturement of particle speed and mass flowrate in two-phase flow. The theory shows that the time derivative of the signal cross-correla-tration of the solid phase.Furthermore,the derived model leads to an overlaped sensor arrange-ment and signal processing scheme, which makes it possible to measure the true mean velocities.Experiment result in pneumatic conveyors by capacitive sensor has proved the good agreement be-tween theory and practice. |
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| Keywords: | correlation gradient method gas-solid biphase flow capacitive sensor |
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