Ultrasonic tomographic velocimeter for visualization of axial flow fields in pipes

Liu, Jiannan; Wang, BoXiong; Cui, Yuanyuan; Wang, Hao‐Yuan

doi:10.1016/j.flowmeasinst.2014.10.014

Cited by 18 publications

(4 citation statements)

References 26 publications

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“…If a pipe of circular cross-section and a configuration where two rings of transmitters and receivers are placed around the pipe are taken into account, then the non-axial components of the flow velocity vector in the channel can be obtained by such arranged measurements. For example, this is roughly how the team Liu 2015 [9] proceeded.…”

Section: Ultrasonic Flowmeter and Tomograph Developmentmentioning

confidence: 99%

Measurement of Fluid Flow with Different Velocity Profiles by New Built Ultrasonic Flowmeter

Barraclough¹,

Strob²,

Pulec

et al. 2022

MATEC Web Conf.

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The paper describes the development of a non-invasive flowmeter for lower flow rates and its first tests. This gauge is physically based on the interaction of fluid flow with an ultrasonic signal that passes through the fluid from the transmitter to the receiver. Ultrasonic flowmeters are currently relatively commonly used gauges, whose advantages such as non-invasiveness (i.e. zero pressure losses) and the ability to seamlessly measure the flow rates of any (for example opaque) liquids, without contact with the liquid, are widely known. However, there are still parts of the ultrasonic flowmeter measurement chain that are undergoing research and development. It can be signal processing itself (mainly), its design solution, measurement for different flow cases (measurement in a flow field with a uniform velocity profile, in a flow field with an axisymmetric velocity profile, in a flow field with a general velocity profile), validation of the applied signal processing approaches, evaluation of uncertainties. The flowmeter itself, which development is described in the paper, will be used for trouble-free measurement in air engineering, but also serves as a training device for building a more complex ultrasonic gauge. Therefore, this flowmeter contains more signal transmitters and receivers than it is usual and all transmitter-receiver combinations are captured during the measurement. This gauge is called ultrasonic tomograph and its principle is also outlined in the paper. Here, so far, without a reconstructed vector field.

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Section: Ultrasonic Flowmeter and Tomograph Developmentmentioning

confidence: 99%

Measurement of Fluid Flow with Different Velocity Profiles by New Built Ultrasonic Flowmeter

Barraclough¹,

Strob²,

Pulec

et al. 2022

MATEC Web Conf.

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show abstract

“…To quantify reconstruction accuracy, an image error and correlation coefficient defined by equations ( 15) and ( 16) are used [17]:…”

Section: Sensitivity Studiesmentioning

confidence: 99%

Coupled velocity and temperature acoustic tomography in heated high subsonic Mach number flows

Otero

Lowe

et al. 2019

Meas. Sci. Technol.

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The application of acoustic tomography (AT) for simultaneous velocity and static temperature estimation has generally been restricted to low subsonic Mach number applications due to the increased complexities associated with acoustic refraction, high computational resource requirements, and a limited range of practical applications. The current work describes a novel AT method for application in such conditions and presents the results of a proof of concept laboratory jet experiment. Using a traversed set of acoustic sound source and microphones, acoustic propagation time measurements were collected at Mach 0.48 and 0.72 jet conditions (with total temperatures of 675 K) along three azimuthal orientations and used to perform AT. A comparison of intrusive and non-intrusive measurements showed that a three orientation reconstruction could approximate jet plume size and location within 1/4th of the jet’s radius. Several sensitivity studies were conducted to assess the behavior and limitations of the proposed AT method. In particular, the effects of orientation count, reconstruction resolution, and displacement measurement errors were investigated. The findings of these sensitivity studies were used to make recommendations for future experiments. This application is the first time an acoustic method is used to non-intrusively and simultaneously measure jet velocity and static temperature distributions in high subsonic Mach number flows.

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“…In this case, the system is able to measure both the liquid-and bubble-velocity profiles saving the spatial resolution below 0,8mm. The last example of a UST velocimeter can be found in [83]. This device is capable to provide quantitative images of axial flow fields in pipes and to detect the flow in various directions and positions.…”

Section: Velocity Profilementioning

confidence: 99%

Computer methods for non-invasive measurement and control of two-phase flows: a review study

Wajman

2019

ITC

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Nowadays, the application of advanced technologies in modern production systems is the main trend of development and technological progress in many industrial sectors. It is due to the still growing trends of energy-saving and production quality enhancement. Wherever in the production process the phase mixture is transported and it is not optimal or not economic, there is a need to develop a system which would be able to prevent any construction disaster, unexpected production line stopping or situation where for reasons of bad flow parameters, the final product is defective. This paper studies various sensors, measurement techniques and computer methods for signal processing and analysis to diagnose and control two-phase flows. Due to the possibility that the invasive measurement disturbs the process and changes it parameters and behavior especially in the location just after the measurement point and simultaneously does not provide any information about these changes it is unreliable for the diagnosis or control. Therefore, the non-invasive techniques commonly used for measurement of flows parameters are described. Depending on the industrial demands many of applications examples for non-invasive two-phase flows measurement and monitoring are given. This description for identifying the flow parameters is divided into features categories of this phenomena as void fraction distribution, velocity profile and flow regime. However, from these methods the high accuracy and short processing time is expected. The continued observation and monitoring of the process abnormalities can provide valuable information about its dynamic state and allow for real-time and automatic monitoring and control. Therefore, the development of advanced process control is one of the most important challenges to keep the flow regime on the given level and for instant and long-term energy saving, quality improvement.

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Ultrasonic tomographic velocimeter for visualization of axial flow fields in pipes

Cited by 18 publications

References 26 publications

Measurement of Fluid Flow with Different Velocity Profiles by New Built Ultrasonic Flowmeter

Measurement of Fluid Flow with Different Velocity Profiles by New Built Ultrasonic Flowmeter

Coupled velocity and temperature acoustic tomography in heated high subsonic Mach number flows

Computer methods for non-invasive measurement and control of two-phase flows: a review study

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