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Pipe Flowrate Measurement

Pipe Flowrate Measurement

In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...

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Related Experiment Video

Updated: Dec 24, 2025

Ultrasound Velocity Measurement in a Liquid Metal Electrode

Ultrasound Velocity Measurement in a Liquid Metal Electrode

Published on: August 5, 2015

Multi-Angle Liquid Flow Measurement Using Ultrasonic Linear Array Transducer.

Thi Huong Ly Nguyen¹, Suhyun Park¹

¹School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Korea.

Sensors (Basel, Switzerland)

|April 15, 2020

Summary

This summary is machine-generated.

This study introduces a non-invasive ultrasonic flowmeter using a linear array transducer. It achieves 93% accuracy in liquid flow measurement, significantly improving upon previous methods.

Keywords:

array transducer multiple angular compensation transit-time ultrasonic flowmeter

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Area of Science:

Engineering
Physics
Instrumentation

Background:

Ultrasonic flowmeters rely on precise sensor placement for accurate performance.
Traditional methods often involve invasive techniques or lower accuracy.
Optimizing ultrasound wave transmission is key to non-invasive flow measurement.

Purpose of the Study:

To develop a non-invasive ultrasonic liquid flowmeter using a linear array transducer.
To enhance measurement accuracy through controlled ultrasound wave incidence angles.
To evaluate the flowmeter's performance in a metal pipe system.

Main Methods:

Utilized a 128-element linear array transducer with transmit delay control.
Employed the transit-time method with cross-correlation for flow estimation.
Implemented a multiple angular compensation method with 24 angles.

Main Results:

Achieved up to 93% accuracy in liquid flow measurements (0-50 L/min).
Outperformed a single plane wave approach (74% accuracy).
Demonstrated effective non-invasive measurement in a metal pipe.

Conclusions:

The proposed single-sided ultrasonic flowmeter with a linear array transducer offers high accuracy.
Transmit delay control and multiple angular compensation enhance performance.
This technology provides a viable non-invasive solution for liquid flow monitoring.