Effects of flow measurement on sloped pipes using ultrasonic flowmeter

Kumar, K.; Swain, T.K.; Ekhande, C.S.; Nanaware, R.M.

doi:10.1109/iic.2015.7150985

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…An error deviation of horizontal installation and vertical installation (H=14.5D) exits, and the absolute value of the average error difference between the two is 2.3 %. The test results are similar to those in literature [11] , indicating that the pipe changes from horizontal position to vertical position, the measurement error of the ultrasonic flowmeter increases.…”

Section: Effects Of Pipe Slopesupporting

confidence: 87%

“…Relevant studies have shown that for the slope pipe, the flow velocity distributions will be destroyed and not keep uniform, which will affect the measurement accuracy of the ultrasonic flowmeters. Kumar [11] experimentally studied the indication error of ultrasonic flowmeters when the pipe is inclined at a small angle (6°,12°). The results show that the indication error increases with the increase of the pipe slope.…”

Section: Effects Of Pipe Slopementioning

confidence: 99%

“…In this paper, the effects of valve are taken into consideration. In addition, the experimental study from Kumar's work [11] showed that the slope of pipe has an impact on the measurement accuracy of ultrasonic flowmeter. Considering that the mechanism of the influence of pipe slope is not clear, it is another research content of this paper.…”

Section: Introductionmentioning

confidence: 99%

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Study on the influence factors of on-line measurement accuracy of portable clamp-on ultrasonic flowmeters

Geng¹,

Ji²,

Chen³

et al. 2023

Proceedings of the 19th International Flow Measurement Conference 2022 on Flow Measurement - FLOMEKO 2022

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The portable clamp-on ultrasonic flowmeters are now widely used for on-line measurement in water resource systems, due to the advantages of convenience, economy and safety. However, the measurement accuracy of the clamp-on ultrasonic flowmeter is affected by various factors. During the on-line measurement process, the flow field distributions inside the pipeline have a greater impact on the measurement accuracy. The slope of the pipe and the opening degree of the valve are the two factors that affect the distributions of the flow field inside the pipe. To study the influences of these two factors, experimental tests are carried out on the water flow standard facility. The results show that the measurement errors obtained on the horizontal installation pipe are different from that obtained on the vertical installation pipe, and the absolute value of error deviation is 2.3%. The change of valve opening degree will significantly affect the measurement accuracy of ultrasonic flowmeters. With the decrease of opening degree, the variation range of indication error increases, and the repeatability is difficult to meet the requirements. At the same opening of the valve, the variation range of indication error becomes larger when the measurement point is closer to the valve. The CFD method is applied to simulate the flow filed inside the testing pipeline, and the influence mechanism of the above two factors is analysed. An error calculation model based on the numerical simulation is proposed, which is in good agreement with the experimental results.

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Section: Effects Of Pipe Slopesupporting

confidence: 87%

Section: Effects Of Pipe Slopementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on the influence factors of on-line measurement accuracy of portable clamp-on ultrasonic flowmeters

Geng¹,

Ji²,

Chen³

et al. 2023

Proceedings of the 19th International Flow Measurement Conference 2022 on Flow Measurement - FLOMEKO 2022

View full text Add to dashboard Cite

show abstract

“…Recently, artificial intelligence and mathematical algorithms are used for analysing sensor's outputs and measuring flow rate (Koike, 2002;Rahim, 2007;Wang, 2003). In general, gas and liquid flow pattern varies with pressure, temperature, the geometric figure of pipes, or amount of flow rate (Kumar, 2015). One of the most important disadvantages of those techniques is that measurement depends on fluid flow patterns and then causes instability in the system.…”

Section: Introductionmentioning

confidence: 99%

Archives of Acoustics

Qorbani

Aghdam

2020

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The exact measurement of multiphase flow is an important and essential task in the oil and petrochemical related industries. Several methods have already been proposed in this field. In the existing methods, flow rate measurement depends on the fluid flow pattern. Flow pattern recognition requiring calibration has created instability in such systems. In this paper, a imple and reliable method is proposed which is based on ultrasonic tomography. It is free from calibration and instability problems that existing methods have. The obtained data from a 32-digit array of ultrasonic sensors have been used and the two-phase flow rate including liquid and gas phases have been calculated through a simple algebraic algorithm. Simulation results show that while applying this method the measurement technique is independent from the fluid flow pattern and the system error is decreased. For the proposed algorithm, the average amount of the spatial imaging error (SIE) for a bubble at different positions inside the pipe is about 5%.

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