Study on Noise Treatment in Ultrasonic Flowmeter

The Multipoint Ultrasonic Flowmeter is a vector tomographic device capable of reconstructing all three components of velocity field based solely on boundary ultrasonic measurements. Computer simulations have shown the feasibility of such a device and have been published previously. This paper describes an experimental investigation of achievable accuracy of such a method. Doubled acoustic tripoles used to obtain information of the solenoidal part of vector field show extremely short differences between the Time Of Flights (TOFs) of individual sensors and are therefore sensitive to parasitic effects of TOF measurements. Sampling at 40MHz and correlation method is used to measure the TOF.

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Intraoperative Hemodynamic Study by Doppler Ultrasonic Flowmeter in the Extracranial-Intracranial Arterial Bypass

Microsurgery for Cerebral Ischemia ◽

10.1007/978-1-4612-6090-5_17 ◽

1980 ◽

pp. 99-105

Author(s):

Hajime Handa ◽

Kouzo Moritake ◽

Izumi Nagata ◽

Yasuhiro Yonekawa ◽

Atsushi Okumura ◽

...

Keyword(s):

Ultrasonic Flowmeter ◽

Arterial Bypass ◽

Hemodynamic Study

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The implementation of optimized neural network to improve the accuracy of flow measurement by ultrasonic flowmeter

Modeling, Control and Information Technologies ◽

10.31713/mcit.2019.20 ◽

2019 ◽

pp. 193-194

Author(s):

Oleksandr Ihorovich Parfeniuk ◽

Oleksandr Mykolaiovych Naumchuk ◽

Olena Olehivna Poliukhovych ◽

Pawel Mazurek

Keyword(s):

Neural Network ◽

Artificial Neural Network ◽

Flow Measurement ◽

Ultrasonic Flowmeter ◽

Structural Scheme ◽

Nonlinear Characteristics ◽

The Neural Network ◽

Artificial Neural

It is proposed the technology of intellectual measurement of expenses with the use of an artificial neural network for overcoming the constraints caused by nonlinear characteristics of ultrasonic flowmeters. It is presented structural scheme of the proposed technology and structure of the model of the neural network

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The Value of the Ultrasonic Flowmeter in the Diagnosis of Arterial Diseases

Angiology ◽

10.1177/000331977002100705 ◽

1970 ◽

Vol 21 (7) ◽

pp. 451-461 ◽

Cited By ~ 1

Author(s):

P. Balas ◽

TH Segditsas ◽

D. Koutsopoulos

Keyword(s):

Ultrasonic Flowmeter

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Study of acoustic transducer protrusion and recess effects on ultrasonic flowmeter measurement by numerical simulation

Flow Measurement and Instrumentation ◽

10.1016/j.flowmeasinst.2011.08.003 ◽

2011 ◽

Vol 22 (5) ◽

pp. 488-493 ◽

Cited By ~ 26

Author(s):

Dandan Zheng ◽

Pengyong Zhang ◽

Tianshi Xu

Keyword(s):

Numerical Simulation ◽

Ultrasonic Flowmeter ◽

Acoustic Transducer

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Numerical Analysis of Flow Field Characteristics in Three-Z-Shaped Ultrasonic Flowmeter

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.1829 ◽

2012 ◽

Vol 226-228 ◽

pp. 1829-1834 ◽

Cited By ~ 1

Author(s):

Jing Yuan Tang ◽

Jian Ming Chen ◽

Hong Bin Ma ◽

Guang Yu Tang

Keyword(s):

Flow Field ◽

Cross Sections ◽

Flow Direction ◽

Fluid Velocity ◽

Internal Flow ◽

Reynolds Stress Model ◽

Ultrasonic Flowmeter ◽

Developed Turbulence ◽

Fluid Field ◽

Flow Field Characteristics

The flow field characteristics in U-typed bend has been extensively studied for transit time ultrasonic flowmeters designing, but for the flowmeter with three-Z-shaped round pipe there is still lack of corresponding research. This paper presents a computational fluid dynamics (CFD) approach for modeling of the three-Z-shaped ultrasonic flowmeter and studying of internal fluid field characteristics based on Reynolds stress model (RSM). The fluid velocity profile in the three ultrasound path is obtained using CFD and secondary flow in cross section also is analyzed. The simulation results show that the internal flow fields in the flowmeter are not fully developed turbulence with asymmetric axial velocity distribution and dramatic changes along the flow direction, and there are obvious secondary cross flows on theirs cross-sections. The CFD simulations provide useful insights into the flow field associated with ultrasonic flowmeters design.

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