Acoustical multipath flow measurements based on quadrature integration methods

Tereshchenko, S. A.; Rychagov, Michael N.

doi:10.1134/1.1640734

Cited by 12 publications

(6 citation statements)

References 6 publications

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“…Regardless of the vortex flow, the transit time of the upstream pulse, t u , and the downstream pulse, t d , can be expressed by Eqs. (1) and (2) respectively [17].…”

Section: Principle Of Ultrasonic Tomographic Velocimetrymentioning

confidence: 99%

Ultrasonic tomographic velocimeter for visualization of axial flow fields in pipes

Liu

Wang

Cui

et al. 2015

Flow Measurement and Instrumentation

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“…Regardless of the vortex flow, the transit time of the upstream pulse, t u , and the downstream pulse, t d , can be expressed by Eqs. (1) and (2) respectively [17].…”

Section: Principle Of Ultrasonic Tomographic Velocimetrymentioning

confidence: 99%

Ultrasonic tomographic velocimeter for visualization of axial flow fields in pipes

Liu

Wang

Cui

et al. 2015

Flow Measurement and Instrumentation

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“…Due to the radial symmetric flow, a significant difference between the parallel and fan-shaped path arrangement was not expected. The fan-shaped arrangement has been previously examined theoretically by Tereshchenko [6]. For radial asymmetric flow the fan-shaped arrangement introduces a systematic error.…”

Section: B Comparison Of the Configurationsmentioning

confidence: 99%

“…While different multipath arrangements are possible, e.g. fan-shaped [6], isosceles triangular [7], orthogonal or star shaped arrangement [8], the parallel arrangement of the paths [Fig. 2(a)] is most commonly used [8].…”

Section: Introductionmentioning

confidence: 99%

Multipath Flow Metering of High-Velocity Gas Using Ultrasonic Phased-Arrays

Haugwitz

Hartmann

Allevato

et al. 2022

IEEE Open J. Ultrason., Ferroelect., Freq. Contr.

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In this work we combine a multipath ultrasonic gas flow meter (UFM) with an ultrasonic air-coupled phasedarray. This allows complementing the advantages of a multipath UFM, i.e. higher accuracy and more robustness to irregular flow, with the extended velocity measuring range due to sound drift compensation via a phased-array. We created a 3D-printed flow meter consisting of an 8 × 8 λ/2 phased-array for transmission and 14 individual receivers for seven upstream and seven downstream sound paths. Measurements were conducted in a test rig with a maximum gas flow rates of 8.3 m 3 s −1 (107 m s −1 ). A differential pressure nozzle was used as reference sensor. Three configurations were compared: Parallel sound paths with a single transmitter; parallel sound paths with the phasedarray as transmitter; and fan-shaped sound paths with the phased-array as transmitter. The signal-to-noise ratio (SNR) and deviation of measured flow were used as comparison criteria. In addition, we measured the optimum steering angles of the phased-array required to compensate the sound drift effect. Using the phased-array with the sound drift effect compensation enabled and disabled, the SNR increases by 10.6 dB and 4.95 dB, respectively, compared to the single transmitter setup at 83 m s −1 . Furthermore, the phased-array with compensation active, extends the velocity measuring range by 29%, from 83 m s −1 to 107 m s −1 , while maintaining a similar standard deviation of the flow measured. Besides demonstrating that a phased-array in a gas flow meter significantly extends the measurement range, our setup qualifies as versatile research platform for designing future high-velocity gas flow meters.

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“…turbine, vortex meters), single path UFM can't meet the demand in terms of accuracy. Because of inhomogeneous gas velocity distribution in the pipeline [12], multipath ultrasonic gas flow-meter has been proposed [13]. Somehow, a multipath UFM is an extension of the single-path UFM.…”

Section: Multipath Fusion In Ultrasonic Gas Flow-meter 41 Integratimentioning

confidence: 99%

Multipath ultrasonic gas flow-meter based on multiple reference waves

et al. 2018

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Several technologies can be used in ultrasonic gas flow-meters, such as transit-time, Doppler, cross-correlation and etc. In applications, the approach based on measuring transit-time has demonstrated its advantages and become more popular. Among those techniques which can be applied to determine time-of-flight (TOF) of ultrasonic waves, including threshold detection, cross correlation algorithm and other digital signal processing algorithms, cross correlation algorithm has more advantages when the received ultrasonic signal is severely disturbed by the noise. However, the reference wave for cross correlation computation has great influence on the precise measurement of TOF. In the applications of the multipath flow-meters, selection of the reference wave becomes even more complicated. Based on the analysis of the impact factors that will introduce noise and waveform distortion of ultrasonic waves, an averaging method is proposed to determine the reference wave in this paper. In the multipath ultrasonic gas flow-meter, the analysis of each path of ultrasound needs its own reference wave. In case study, a six-path ultrasonic gas flow-meter has been designed and tested with air flow through the pipeline. The results demonstrate that the flow rate accuracy and the repeatability of the TOF are significantly improved by using averaging reference wave, compared with that using random reference wave.

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Acoustical multipath flow measurements based on quadrature integration methods

Cited by 12 publications

References 6 publications

Ultrasonic tomographic velocimeter for visualization of axial flow fields in pipes

Ultrasonic tomographic velocimeter for visualization of axial flow fields in pipes

Multipath Flow Metering of High-Velocity Gas Using Ultrasonic Phased-Arrays

Multipath ultrasonic gas flow-meter based on multiple reference waves

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