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Journal articles on the topic 'Venturi meter'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Pham, T. M., J. M. Michel, and Y. Lecoffre. "Dynamical Nuclei Measurement: On the Development and the Performance Evaluation of an Optimized Center-Body Meter." Journal of Fluids Engineering 119, no. 4 (December 1, 1997): 744–51. http://dx.doi.org/10.1115/1.2819493.

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This work is concerned with the development of a center-body venturi for nuclei measurements of novel design, the Venturix. Our project aims to: 1. Define a specially tailored geometry for cavitation nuclei measurement. This design study takes into consideration the following main aspects: the venturi mean flow in subcavitating regime, the viscous effects, the bubble dynamics. 2. Evaluate the performance of the meter: After testing the proposed design concepts, the venturi operating characteristics, in particular its operational limits, are assessed. Finally, the performance of the acoustic method used for detecting and counting the active nuclei in the venturi is discussed.

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2

J. A. Replogle and B. Wahlin. "Venturi Meter Constructions for Plastic Irrigation Pipelines." Applied Engineering in Agriculture 10, no. 1 (1994): 21–26. http://dx.doi.org/10.13031/2013.25822.

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3

Bober, W., and W. L. Chow. "Nonideal Gas Effects for the Venturi Meter." Journal of Fluids Engineering 113, no. 2 (June 1, 1991): 301–4. http://dx.doi.org/10.1115/1.2909496.

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A method for treating nonideal gas flows through a venturi meter is described. The method is an extension of a previous study reported in an earlier paper. The method involves the determination of the expansion factor which may then be used to determine the mass flow rate through the venturi meter. The method also provides the means for determining the critical pressure ratio as well as the maximum flow rate per unit throat area. The Redlich-Kwong equation of state is used, which allows for closed form expressions for the specific heat at constant volume and the change in entropy. The Newton-Raphson method is used to determine the temperature and specific volume at the throat. It is assumed that the following items are known: the upstream temperature and pressure and the ratio of the throat pressure to the upstream pressure. Results were obtained for methane gas. These results indicate that for the cases considered, the use of the ideal gas expression for the expansion factor would lead to an error in the determination of the mass flow rate; the error increases as the throat to inlet pressure ratio decreases. For the example reported in this study, the maximum percent difference in the critical pressure ratio between the ideal and nonideal gases was 5.81 percent, while the maximum percent difference in the maximum flow rate per unit throat area was 7.62 percent.

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4

Yanagihara, S. "Variable area venturi-type exhaust gas flow meter." JSAE Review 20, no. 2 (April 1999): 265–67. http://dx.doi.org/10.1016/s0389-4304(99)00003-x.

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5

Oliveira, Natalia M. B., Luiz Gustavo Martins Vieira, and João Jorge Ribeiro Damasceno. "Numerical Methodology for Orifice Meter Calibration." Materials Science Forum 660-661 (October 2010): 531–36. http://dx.doi.org/10.4028/www.scientific.net/msf.660-661.531.

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Orifice Meters are mechanical devices used to measure gases and liquids flows. Due to manufacturing, installation and operation simplicity, the orifice meters are widely used in the industrial processes in which there is flow of gases or liquids. Moreover, their acquisition and operation costs are smaller than the ones verified for other flow meters (Venturi, flowmeter). However, before the utilization of any calibration orifice meters, they demand an experimental calibration procedure. Thus, in order to suppress this laborious experimental procedure, this work objectified to apply computational fluid dynamics techniques (CFD) to numerically predict the Calibration Coefficient of the orifice meter. The adopted numerical methodology was able to satisfactorily predict the discharge coefficients, presenting an economic alternative when compared to traditional experimental approaches.

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6

He, Denghui, and Bofeng Bai. "Numerical investigation of wet gas flow in Venturi meter." Flow Measurement and Instrumentation 28 (December 2012): 1–6. http://dx.doi.org/10.1016/j.flowmeasinst.2012.07.008.

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7

Steven, R. N. "Wet gas metering with a horizontally mounted Venturi meter." Flow Measurement and Instrumentation 12, no. 5-6 (January 2002): 361–72. http://dx.doi.org/10.1016/s0955-5986(02)00003-1.

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8

Huang, Si, Peng Wang, and Yu Hui Guan. "Theoretical and Experimental Study on Oil-Water Two-Phase Flow in a Downhole Venturi Meter." Applied Mechanics and Materials 232 (November 2012): 284–87. http://dx.doi.org/10.4028/www.scientific.net/amm.232.284.

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This paper presents a study on an oil-water two-phase flow model in a downhole Venturi meter by theoretical calculation, numerical simulation and experimental testing. The flow field and pressure characteristics with different flow and oil-water ratios in Venturi tube are investigated. It is found that the flow is stratified in the Venturi tube, the water phase accumulates in the tube center and the oil phase concentrates on the wall; the pressure drop is increased with flow; theoretical and numerical results are verified by experimental data.

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9

d’Agostino, L., and A. J. Acosta. "A Cavitation Susceptibility Meter With Optical Cavitation Monitoring—Part One: Design Concepts." Journal of Fluids Engineering 113, no. 2 (June 1, 1991): 261–69. http://dx.doi.org/10.1115/1.2909490.

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This work is concerned with the design of a Cavitation Susceptibility Meter based on the use of a venturi tube for the measurement of the active cavitation nuclei concentration in water samples as a function of the applied tension. The operation of the Cavitation Susceptibility Meter is analyzed and the main considerations leading to the proposed design are illustrated and critically discussed. The results of this analysis indicate that the operational range is mainly limited by nuclei interference, flow separation and saturation (choking), and suggest to develop a Cavitation Susceptibility Meter where: (a) the flow possesses a laminar potential core throughout the venturi throat section in all operational conditions; (b) the pressure at the venturi throat is determined from the upstream pressure and the local flow velocity; (c) the detection of cavitation and the measurement of the flow velocity are carried out optically by means of a Laser Doppler Velocimeter; (d) a custom-made electronic Signal Processor incorporating a frequency counter is used for real time data generation and temporary storage; (e) a computerized system performs the final acquisition and reduction of the data.

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10

Rosa, Euge^nio S., and Rigoberto E. M. Morales. "Experimental and Numerical Development of a Two-Phase Venturi Flow Meter." Journal of Fluids Engineering 126, no. 3 (May 1, 2004): 457–67. http://dx.doi.org/10.1115/1.1758267.

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An algebraic model is developed access the gas and the liquid flow rates of a two-phase mixture through a Venturi tube. The flow meter operates with upward bubbly flows with low gas content, i.e., volumetric void fraction bellow 12%. The algebraic model parameters stem from numerical modeling and its output is checked against the experimental values. An indoor test facility operating with air-water and air-glycerin mixtures in a broad range of gas and liquid flow rates reproduces the upward bubbly flow through the Venturi tube. Measurements of gas and liquid flow rates plus the static pressure acroos the Venturi constitute the experimental database. The numerical flow modeling uses the isothermal, axis-symmetric with no phase change representation of the Two-Fluid model. The numerical output feeds the Venturi’s algebraic model with the proper constants and parameters embodying the two-phase flow physics. The novelty of this approach is the development of each flow meter model accordingly to its on characteristics. The flow predictions deviates less than 14% from experimental data while the mixture pipe Reynolds number spanned from 500 to 50,000.

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11

K.V., Santhosh. "FUSION OF VENTURI AND ULTRASONIC FLOW METER FOR ENHANCED FLOW METER CHARACTERISTICS USING FUZZY LOGIC." ICTACT Journal on Soft Computing 05, no. 03 (April 1, 2015): 936–41. http://dx.doi.org/10.21917/ijsc.2015.0131.

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12

d’Agostino, L., T. Pham, and S. Green. "Comparison of a Cavitation Susceptibility Meter and Holography for Nuclei Detection in Liquids." Journal of Fluids Engineering 111, no. 2 (June 1, 1989): 197–203. http://dx.doi.org/10.1115/1.3243623.

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This work compares the results obtained from a Cavitation Susceptibility Meter (CSM) and from direct holographic observations for the detection of cavitation nuclei in tap water samples. The CSM uses a cavitating venturi tube to measure the concentration of active cavitation nuclei as a function of the pressure at the venturi throat, while the holographic system measures the nuclei concentration size distribution. Microbubbles are used as the dominant type of cavitation nuclei. The data from the two nuclei detection methods are then compared and interpreted in view of the expected dynamic behavior of microbubbles in the CSM venturi throat. Both results show that the concentration of active cavitation nuclei initially increases exponentially with the applied tension, reaches a maximum and remains nearly constant thereafter when few additional nuclei are left to cavitate. In its current configuration the CSM tends to underestimate the concentration of active cavitation nuclei and to overestimate the value of the nuclei critical pressure as a consequence of sensitivity limitations and interference effects between the cavities.

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13

Xu, Lijun, Wanlu Zhou, and Xiaomin Li. "Wet gas flow modeling for a vertically mounted Venturi meter." Measurement Science and Technology 23, no. 4 (March 7, 2012): 045301. http://dx.doi.org/10.1088/0957-0233/23/4/045301.

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14

d’Agostino, Luca, and S. I. Green. "Simultaneous Cavitation Susceptibility Meter and Holographic Measurements of Nuclei in Liquids." Journal of Fluids Engineering 114, no. 2 (June 1, 1992): 261–67. http://dx.doi.org/10.1115/1.2910025.

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Cavitation Susceptibility Meter (CSM) and holographic measurements of cavitation nuclei distributions are compared in this paper. The CSM optically detects cavitation in water samples flowing through a venturi and relates the unstable nuclei concentration to the applied tension in the fluid. A ruby laser holographic system measures the nuclei size distribution directly. Microbubbles have been used as the dominant nuclei source. The data from the two detection schemes are correlated by accounting for the dynamic response of the cavities in the venturi throat. The active nuclei distributions predicted by the holographic data compare favorably with those measured by the CSM. Both detection methods show that the nuclei concentration rises approximately exponentially as the applied tension is increased and then, with further reduction in the pressure, tends to a nearly constant maximum due to the shortage of remaining cavitatable nuclei. The CSM consistently underestimates the concentration of active cavitation nuclei, due to limited electro-optical resolution and mutual interference effects between cavities in the venturi. The good qualitative agreement of the two techniques supports the validity of the data correlation model and clearly indicates that any practical interpretation of measured nuclei size distributions for cavitations predictions is highly dependent of the specific flow conditions. Attempts to cavitate saturated water of the California Institute of Technology Low Turbulence Water Tunnel in the CSM were unsuccessful even at the lowest attainable CSM throat pressures (about −40kPa). This is thought to be due to insufficient throat tension and, at least partially, to the short time available for cavity growth in the CSM.

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15

Li, Xia, Zhiyao Huang, Zhenzhen Meng, Baoliang Wang, and Haiqing Li. "OIL-WATER TWO-PHASE FLOW MEASUREMENT USING A VENTURI METER AND AN OVAL GEAR FLOW METER." Chemical Engineering Communications 197, no. 2 (November 13, 2009): 223–31. http://dx.doi.org/10.1080/00986440902938469.

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16

Adamski, Krzysztof, Bartosz Kawa, and Rafał Walczak. "3D Printed Flowmeter Based on Venturi Effect with Integrated Pressure Sensors." Proceedings 2, no. 13 (December 21, 2018): 1509. http://dx.doi.org/10.3390/proceedings2131509.

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In this paper we present a 3D printed flow meter based on venturri effect. Dimensions of the microchannels are 800 µm for wider and 400 µm for thinker channel. Application of different type of sensors was investigated: differential, absolute and digital barometer. Results of measurement of differential pressure and calculation of liquid flow are shown. Presented microfluidics device can be also easy adapted for modular systems. Presented flow meter is the first integration of commercial available sensors and 3D printed microfluidics structure in a single chip.

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17

Feng, Ding, Si Huang, Yu Hui Guan, and Wei Guo Ma. "CFD Simulation of Two-Phase Flow in a Downhole Venturi Meter." Applied Mechanics and Materials 130-134 (October 2011): 3644–47. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.3644.

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This work performs an oil-water two-phase flow simulation in a downhole Venturi meter to investigate the flow field and pressure characteristics with different flow and oil-water ratios. The relation between the pressure drop and the feed flow rate in the flowmeter is investigated for its optimal design.

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18

Huang, X., and S. W. Van Sciver. "Performance of a venturi flow meter in two-phase helium flow." Cryogenics 36, no. 4 (April 1996): 303–9. http://dx.doi.org/10.1016/0011-2275(96)88790-x.

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19

Chahine, G. L., and Y. T. Shen. "Bubble Dynamics and Cavitation Inception in Cavitation Susceptibility Meters." Journal of Fluids Engineering 108, no. 4 (December 1, 1986): 444–52. http://dx.doi.org/10.1115/1.3242602.

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To improve the understanding of the scaling effects of nuclei on cavitation inception, bubble dynamics, multibubble interaction effects, and bubble-mean flow interaction in a venturi Cavitation Susceptibility Meter are considered theoretically. The results are compared with classical bubble static equilibrium predictions. In a parallel effort, cavitation susceptibility measurements of ocean and laboratory water were carried out using a venturi device. The measured cavitation inception indices were found to relate to the measured microbubble concentration. The relationship between the measured cavitation inception and bubble concentration and distribution can be explained by using the theoretical predictions. A tentative explanation is given for the observation that the number of cavitation bursting events measured by an acoustic device is sometimes an order of magnitude lower than the number of microbubbles measured by the light scattering detector. The questions addressed here add to the fundamental knowledge needed if the cavitation susceptibility meter is to be used effectively for the measurement of microbubble size distributions.

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20

Monni, Grazia, Mario De Salve, and Bruno Panella. "Two-phase flow measurements at high void fraction by a Venturi meter." Progress in Nuclear Energy 77 (November 2014): 167–75. http://dx.doi.org/10.1016/j.pnucene.2014.06.006.

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21

Ghassemi, Hojat, and Hamidreza Farshi Fasih. "Application of small size cavitating venturi as flow controller and flow meter." Flow Measurement and Instrumentation 22, no. 5 (October 2011): 406–12. http://dx.doi.org/10.1016/j.flowmeasinst.2011.05.001.

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22

Karimi, Muhammad Akram, Muhammad Arsalan, and Atif Shamim. "Extended Throat Venturi Based Flow Meter for Optimization of Oil Production Process." IEEE Sensors Journal 21, no. 16 (August 15, 2021): 17808–16. http://dx.doi.org/10.1109/jsen.2021.3083532.

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23

d’Agostino, L., and A. J. Acosta. "A Cavitation Susceptibility Meter With Optical Cavitation Monitoring—Part Two: Experimental Apparatus and Results." Journal of Fluids Engineering 113, no. 2 (June 1, 1991): 270–77. http://dx.doi.org/10.1115/1.2909491.

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This work is concerned with the development and operation of a Cavitation Susceptibility Meter based on the use of a venturi tube for the measurement of the active cavitation nuclei concentration in water samples as a function of the applied tension. The pressure at the venturi throat is determined from the upstream pressure and the local flow velocity without corrections for viscous effects because the flow possesses a laminar potential core in all operational conditions. The detection of cavitation and the measurement of the flow velocity are carried out optically by means of a Laser Doppler Velocimeter. A custom-made electronic Signal Processor is used for real time data generation and temporary storage and a computerized system for final data acquisition and reduction. The implementation of the whole system is described and the results of the application of the Cavitation Susceptibility Meter to the measurement of the water quality of tap water samples are presented and critically discussed with reference to the current state of knowledge on cavitation inception.

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24

Xu, Lijun, Wanlu Zhou, Xiaomin Li, and Shaliang Tang. "Wet Gas Metering Using a Revised Venturi Meter and Soft-Computing Approximation Techniques." IEEE Transactions on Instrumentation and Measurement 60, no. 3 (March 2011): 947–56. http://dx.doi.org/10.1109/tim.2010.2045934.

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25

Lijun Xu, Wanlu Zhou, Xiaomin Li, and Minghao Wang. "Wet-Gas Flow Modeling for the Straight Section of Throat-Extended Venturi Meter." IEEE Transactions on Instrumentation and Measurement 60, no. 6 (June 2011): 2080–87. http://dx.doi.org/10.1109/tim.2011.2117190.

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26

Monni, G., M. Caramello, M. De Salve, and B. Panella. "Venturi flow meter and Electrical Capacitance Probe in a horizontal two-phase flow." Journal of Physics: Conference Series 655 (November 16, 2015): 012033. http://dx.doi.org/10.1088/1742-6596/655/1/012033.

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27

Carter, Michael, William Johansen, and Charles Britton. "Performance of a gas flow meter calibration system utilizing critical flow venturi standards." MAPAN 26, no. 3 (September 2011): 247–54. http://dx.doi.org/10.1007/s12647-011-0023-4.

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28

Sakr, Ismail, Wageeh ElAskary, Mohamed Sheha, and Tarek ghonim. "Experimental Study of the Performance of a Venturi-Meter with Suspended Gas-Solid Flow." ERJ. Engineering Research Journal 43, no. 3 (July 1, 2020): 195–97. http://dx.doi.org/10.21608/erjm.2020.95142.

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29

Steven, Richard. "A dimensional analysis of two phase flow through a horizontally installed Venturi flow meter." Flow Measurement and Instrumentation 19, no. 6 (December 2008): 342–49. http://dx.doi.org/10.1016/j.flowmeasinst.2008.05.004.

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30

Gajan, P., Q. Decaudin, and J. P. Couput. "Analysis of high pressure tests on wet gas flow metering with a Venturi meter." Flow Measurement and Instrumentation 44 (August 2015): 126–31. http://dx.doi.org/10.1016/j.flowmeasinst.2014.12.004.

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31

Zhen, Yang. "Research on the Coaxial Connection between Gas Flowmeter and Critical Flow Venturi Nozzle Gas Flow Standard Device." Key Engineering Materials 693 (May 2016): 194–99. http://dx.doi.org/10.4028/www.scientific.net/kem.693.194.

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As an important measurement instruments of trade metering, gas flowmeter has been more and more widely used, and the quantity value transfer of the flow meter is becoming increasingly significant. In order to realize the accurate measurement, the method of the coaxial connection between gas flowmeter and critical flow Venturi nozzle gas flow standard device is studied in this paper, and the coaxial error between this gas flowmeter and standard device within ±1mm is achieved.

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32

Xu, Ying, Chao Yuan, Zheng Hai Long, Qiang Zhang, Zhen Lin Li, and Tao Zhang. "Experimental Investigation of the Wet Gas Measurement Based on Triple Differential Pressures Method." Applied Mechanics and Materials 220-223 (November 2012): 781–84. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.781.

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In order to meter the wet gas without separation online, a novel measurement device composed of a long throat Venturi tube and a V-cone is proposed and a new metering method based on triple differential pressures. In this method, the ratios of the differential pressures are vital parameters used to establish the measurement correlations. The comparison of these correlations is also presented. In laboratory test, the measurement accuracy of the gas and liquid are 2.13% and 6.68% respectively.

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33

Gribok, Andrei V., Ibrahim K. Attieh, J. Wesley Hines, and Robert E. Uhrig. "Regularization of Feedwater Flow Rate Evaluation for Venturi Meter Fouling Problem in Nuclear Power Plants." Nuclear Technology 134, no. 1 (April 2001): 3–14. http://dx.doi.org/10.13182/nt01-a3181.

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34

Elperin, T., A. Fominykh, and M. Klochko. "Performance of a Venturi meter in gas–liquid flow in the presence of dissolved gases." Flow Measurement and Instrumentation 13, no. 1-2 (March 2002): 13–16. http://dx.doi.org/10.1016/s0955-5986(02)00013-4.

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35

Xu, Lijun, Jian Xu, Feng Dong, and Tao Zhang. "On fluctuation of the dynamic differential pressure signal of Venturi meter for wet gas metering." Flow Measurement and Instrumentation 14, no. 4-5 (August 2003): 211–17. http://dx.doi.org/10.1016/s0955-5986(03)00027-x.

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36

Panchal, R., N. C. Gupta, A. Garg, R. Patel, P. Shah, V. L. Tanna, and S. Pradhan. "Design and engineering validation of venturi flow meter for current feeder system of SST 1." Indian Journal of Cryogenics 39, no. 1 (2014): 53. http://dx.doi.org/10.5958/2349-2120.2014.00800.0.

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37

Wrasse, Aluisio Do N., Dalton Bertoldi, Eduardo N. Dos Santos, Rigoberto E. M. Morales, and Marco J. Da Silva. "Gas–Liquid Flow Rate Measurement Using a Twin-Plane Capacitive Sensor and a Venturi Meter." IEEE Access 7 (2019): 135933–41. http://dx.doi.org/10.1109/access.2019.2942772.

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38

Lathifa Putri Afisna and Wibawa Endra Juwana. "APLIKASI MICROBUBBLE GENERATOR POROUS-VENTURI PADA PENGOLAHAN AIR LIMBAH BUATAN." KURVATEK 5, no. 1 (May 1, 2020): 11–18. http://dx.doi.org/10.33579/krvtk.v5i1.1818.

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Abstrak Keterbatasan air bersih akibat terjadinya pencemaran air dari limbah rumah tangga dan industri maka perlu mengembangkan sebuah alat teknologi pengolahan air limbah yang ramah lingkungan dan instalasi yang mudah. Microbubble generator (MBG) digunakan untuk menghasilkan oksigen yang diperlukan oleh bakteri untuk melakukan dekomposisi air limbah. Pada penelitian ini didesain MBG porous-venturi dipasang pada kolam air limbah buatan. Parameter yang akan diukur koefisien perpindahan massa (KLa), kadar dissolved oxygen (DO) dan chemical oxygen demand (COD). Nilai KLa diukur dengan menggunakan DO meter yang dipasang sejauh 60 cm dan 180 cm dari MBG. Debit air diatur 30-80 lpm dan debit gas 0,1, 0,4 dan 1 lpm. Berdasarkan hasil penelitian, kenaikan debit air pada semua jarak pengukuran menyebabkan nilai KLa semakin naik, namun kenaikan debit gas tidak mempengaruhi secara signifikan. Nilai DO yang semakin tinggi akan mengurangi kadar COD dalam air limbah buatan dibawah 100 mg/L. Kata kunci: Microbubble, venturi, DO, COD, KLa

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39

d’Agostino, L., and A. J. Acosta. "Separation and Surface Nuclei Effects in a Cavitation Susceptibility Meter." Journal of Fluids Engineering 113, no. 4 (December 1, 1991): 695–98. http://dx.doi.org/10.1115/1.2926536.

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This work is concerned with the effects of flow separation and surface nuclei on the operation of a fixed geometry Cavitation Susceptibility Meter (CSM) with laminar flow. Cavitation is induced under controlled conditions at the throat of a glass venturi tube for the measurement of the active nuclei concentration in water samples as a function of the applied tension. Both cavitation and flow velocity are monitored optically by a Laser Doppler Velocimeter. The throat pressure is determined indirectly from the upstream pressure and the local flow velocity. The results show that laminar flow separation and surface nuclei effects are the most stringent operational limitations. Separation in the diffuser increases the minimum attainable throat pressure above the susceptibility of most cavitation nuclei commonly found in technical waters. Surface nuclei can generate extensive sheet or spot cavitation at relatively high tensions even on optically finished glass surfaces. These phenomena are difficult to eliminate and bring therefore into question the practical utility of CSM’s with laminar flow and fixed geometry for the measurement of the dependence of the cavitating nuclei concentration over wide ranges of the applied tension, as required for cavitation studies.

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40

Huang, Zhiyao, Dailiang Xie, Hongjian Zhang, and Haiqing Li. "Gas–oil two-phase flow measurement using an electrical capacitance tomography system and a Venturi meter." Flow Measurement and Instrumentation 16, no. 2-3 (April 2005): 177–82. http://dx.doi.org/10.1016/j.flowmeasinst.2005.02.007.

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41

Meng, Zhenzhen, Zhiyao Huang, Baoliang Wang, Haifeng Ji, Haiqing Li, and Yong Yan. "Air–water two-phase flow measurement using a Venturi meter and an electrical resistance tomography sensor." Flow Measurement and Instrumentation 21, no. 3 (September 2010): 268–76. http://dx.doi.org/10.1016/j.flowmeasinst.2010.02.006.

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42

Pan, Yanzhi, Yi Hong, Qin Sun, Ziqiong Zheng, Dong Wang, and Pengman Niu. "A new correlation of wet gas flow for low pressure with a vertically mounted Venturi meter." Flow Measurement and Instrumentation 70 (December 2019): 101636. http://dx.doi.org/10.1016/j.flowmeasinst.2019.101636.

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43

Chen, Desheng, Haibin Cao, and Baoling Cui. "Study on flow field and measurement characteristics of a small-bore ultrasonic gas flow meter." Measurement and Control 54, no. 5-6 (April 9, 2021): 554–64. http://dx.doi.org/10.1177/00202940211007515.

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A new structure is proposed for a DN25-type ultrasonic gas flow meter with a V-shape double sound channel arrangement. The flow field characteristics are analyzed including velocity curves for the four channel lines, velocity profiles for different cross-sections of the flow meter, and streamlines of the transducer channel sections. The metering characteristics of the flowmeter are measured using a Venturi nozzle device. When the pipeline flow rate is less than 2.26 m/s, the pipe installation does not have a significant effect on the velocity profile and the velocity in the channel lines. However, the error in the low-flow region is large, and the flow distortion directly affects the measurement accuracy. When an ultrasonic gas flow meter with an accuracy class of 1.5 is used with pipes containing a single or double bend upstream, the linear error doubles, low-flow error becomes a negative deviation, and reference error in the low-flow region becomes approximately 700%–949%. The installation structure of the first pair of transducers also affects the signal propagation of the transducers behind it. Therefore, it is critical to process the ultrasonic signal according to the flow field distribution and adopt different weighted algorithms to obtain accurate pipeline flow rates to improve the measurement accuracy of the ultrasonic flow meter.

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44

Gribok, Andrei V., Ibrahim K. Attieh, J. Wesley Hines, and Robert E. Uhrig. "Stochastic regularization of feedwater flow rate evaluation for the venturi meter fouling problem in nuclear power plants." Inverse Problems in Engineering 9, no. 6 (June 2001): 671–96. http://dx.doi.org/10.1080/174159701088027786.

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45

Guilizzoni, M., G. Salvi, G. Sotgia, and L. P. M. Colombo. "Numerical simulation of oil-water two-phase flow in a horizontal duct with a Venturi flow meter." Journal of Physics: Conference Series 1224 (May 2019): 012008. http://dx.doi.org/10.1088/1742-6596/1224/1/012008.

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Chiesa, G., C. Bertani, N. Falcone, A. Bersano, M. DE Salve, and B. Panella. "Horizontal Air-Water Two-Phase Flow Measurement Using an Electrical Impedance Probe and a Venturi Flow Meter." Journal of Physics: Conference Series 1224 (May 2019): 012040. http://dx.doi.org/10.1088/1742-6596/1224/1/012040.

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UESAWA, Shin-ichiro, Akiko KANEKO, and Yutaka ABE. "21006 Development of an electric resistance void fraction meter in a microbubble generator with a Venturi tube." Proceedings of Conference of Kanto Branch 2010.16 (2010): 341–42. http://dx.doi.org/10.1299/jsmekanto.2010.16.341.

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Wang, Weiwei, Xiao Liang, and Mingzhu Zhang. "Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation." Chinese Journal of Chemical Engineering 23, no. 9 (September 2015): 1447–52. http://dx.doi.org/10.1016/j.cjche.2015.05.008.

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Gajan, P., G. Salque, J. P. Couput, and J. Berthiaud. "Experimental analysis of the behaviour of a Venturi meter submitted to an upstream air/oil annular liquid film." Flow Measurement and Instrumentation 33 (October 2013): 160–67. http://dx.doi.org/10.1016/j.flowmeasinst.2013.05.004.

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Gürbüz, Riza. "The Mechatronics Design for Measuring Fluid Friction Losses in Pipe Flows." Solid State Phenomena 113 (June 2006): 603–8. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.603.

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Abstract:

The purpose of this article is to design a mechatronics system to measure fluid friction losses in a specially designed fluid friction apparatus. It measured fluid flow rates by using venturi tube and orifice plate, and velocity of fluid is calculated in terms of flow rate and pipe diameter. Friction factor (K factor) of some valves and fittings such as tee, elbow, Y Junction, gate and globe valves and friction losses in pipe was measured in this system. It is one of the best methods to measure losses in pipes and fittings experimentally. It used a computer, data acquisition cards, pressure differential transmitters, venturi tube and orifice meter to measure the flow rate, pressure drops on flow rate measurement devices and pressure drops of some valves and fittings to be measured K factors. It also measured the temperature of fluid by using J type Thermocouple. A computer program is written to calculate the Reynold number of fluid, friction factor of pipe, velocity of fluid, frictional losses of fluid, flow rate and K factor of valves and fittings. Required data was received from measured quantities. The conclusion of experiments is shown in article. Volumetric flow rate range was determined 0-1 (L/s), while the pressure drop was 0-100 kPa in experiments.

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