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Note: A vortex cross-correlation flowmeter with enhanced turndown ratio

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Title Note: A vortex cross-correlation flowmeter with enhanced turndown ratio
 
Creator VENUGOPAL, A
AGRAWAL, A
PRABHU, SV
 
Subject PERFORMANCE
SENSOR
 
Description In the present study, a novel dual sensor vortex cross correlation technique is suggested and implemented to extend the lower operating range of the flowmeter. The first sensor located at an optimum streamwise location of 0.85 times the width of the bluff body is employed to compute the vortex shedding frequency under high Reynolds number conditions. Under low Reynolds number conditions, when the strength of the vortex signal is poor, the outputs from the two piezoelectric sensors are correlated to compute the vortex convection velocity. This vortex convection velocity is used to compute the volume flow rate. This novel dual flow rate estimation technique has demonstrated its robustness under low Reynolds number flow conditions with a remarkable turndown ratio of 1: 66 as compared to 1: 20 for conventional vortex flowmeters. (C) 2014 AIP Publishing LLC.
 
Publisher AMER INST PHYSICS
 
Date 2014-12-28T11:03:52Z
2014-12-28T11:03:52Z
2014
 
Type Article
 
Identifier REVIEW OF SCIENTIFIC INSTRUMENTS, 85(6)
0034-6748
1089-7623
http://dx.doi.org/10.1063/1.4884078
http://dspace.library.iitb.ac.in/jspui/handle/100/16310
 
Language English