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Title: Turbulence And Noise In Flow Measurement And Control
Author: Allan R. Catheron
Source: American Gas Association 1976
Year Published: 1976
Abstract: During the course of investigations of various vortex shedding shapes, it was found that the T-shaped bluff body was optimum. Consequently a development program was undertaken that has resulted in the recent sales release by The Foxhoro Company of a T-shaped Vortex Shedding Flowmeter intended for metering liquids. Our intent in this paper is to give a brief history of the development of our understanding of flow noise, how that understandmg can be applied to measurement and control instrumentation and how we go about studying turbulence and applying our knowledge to todays measurement needs. We begin with a definition of flow noise. The term flow noise, as it is understood in industry today, includes turbulence noise as well as random and discrete frequency noise from other sources. The turbulence noise is an internal noise, being associated directly with the flow. It can be best understood with the help of two definitions.

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