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Title: Flow Measurement By Vortex Shedding Flowmeters
Author: Barry S. Young
Source: 1983 Appalachian Gas Measurement Short Course
Year Published: 1983
Abstract: Over the past few years, the use of the vortex flowmeter has become a prominent way to measure the flow of fluids. It has replaced the orifice and turbine flowmeters In many fluid flow measurement applications because of its high reliability and accuracy. The increasing number of vendors offering a vortex flowmeter attests to its growing popularity. Vortex flowmeters measure the flow of fluids by sensing induced vortices, caused by fluid impinging on a nonstreamlined vortex generating element. Liquids, gases, and steam can now be measured by vortex flowmeters. The principle of vortex shedding has been used for measuring flow for over 10 years. However, the basic observation of the vortex shedding phenomenon dates back to the late 1800s, when F. Strouhal noted that the shedding frequency of a wire vibrating in the wind was related to,the wire diameter and wind velocity. Considerable research and testing has since produced a flowmeter which now compares favorably with other flowmeters because of its accuracy and simplicity of construction.

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