NDLI: Improvement of gas ultrasonic flowmeter measurement non-linearity based on ray tracing method

Content Provider	IET Digital Library
Author	Zheng, Dandan Mei, Jianqiang Wang, Mi
Abstract	Gas ultrasonic flowmeters are widely used in natural gas industry. When flow velocity achieves to tens of meters per second, the measurement error may appear significant non-linearity with flow velocity increased. In order to solve this problem, reasons of non-linearity are discussed based on the ray acoustics theory. First, the two-dimensional ray tracing method is introduced and realised by Matlab. Second, both DN100 and DN500 diametric single path gas ultrasonic flowmeters are simulated, respectively. The ultrasonic wave propagation trajectory, transit time, path angle and receiving position of transducer are analysed with increasing flow velocities 1–50 m/s. Third, it is noted that the assumption of traditional velocity measurement model is not consistent with the actual ultrasound propagation. Therefore, a corrected model is proposed. Through comparing results of traditional and corrected models, the measurement error is reduced up to 4%, and the measurement non-linearity is improved.
Starting Page	602
Ending Page	606
Page Count	5
ISSN	17518822
Volume Number	10
e-ISSN	17518830
Issue Number	Issue 6, Sep (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/10/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2015.0310
Journal	IET Science, Measurement & Technology
Publisher Date	2016-09-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acoustic Variables Measurement Angular Measurement DN100 DN500 Flow Velocity Flowmeters Gas Ultrasonic Flowmeter Measurement Level, Flow And Volume Measurement MATLAB Simulation Measurement Error Measurement Instrumentation And Technique For Fluid Dynamics Measurement of Acoustic Variables Natural Gas Industry Path Angle Measurement Position Measurement Ray Acoustics Theory Ray Tracing Receiving Position Measurement Sensing And Detecting Device Sensing Device And Transducers Sonic And Ultrasonic Transducers Spatial Variables Measurement Time And Frequency Measurement Time Measurement Transducer Transit Time Measurement Two-dimensional Ray Tracing Method Ultrasonic Propagation Ultrasonic Transducers Ultrasonic Velocity Measurement Ultrasonic Wave Propagation Trajectory Measurement Ultrasound Propagation Velocity 1 M/s to 50 M/s Velocity Measurement Model
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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