Record Details

Frequency detection in vortex flowmeter for low Reynolds number using piezoelectric sensor and installation effects

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Frequency detection in vortex flowmeter for low Reynolds number using piezoelectric sensor and installation effects
 
Creator VENUGOPAL, A
AGRAWAL, A
PRABHU, SV
 
Subject Piezoelectric sensors
Vortex flowmeter
Trapezoid
EMD
Autocorrelation
EMPIRICAL MODE DECOMPOSITION
SIGNAL QUALITY
BLUFF-BODY
SHEDDER
PROBE
 
Description Piezoelectric sensors are one of the most widely used sensors for vortex flowmeter application due to their low cost. Various researchers have employed piezoelectric sensor for this application. However, the location of the sensor and the performance of vortex flowmeter under disturbed conditions are seldom reported. In the present study, experimental investigations are conducted with water as the working medium in a circular pipe of diameter 52.5 mm. The optimum position of the piezoelectric sensor behind the trapezoidal bluff body is found out be 0.85 times the width of the bluff body. A new algorithm based on empirical mode decomposition and autocorrelation decay rate is suggested to identify the vortex shedding frequency under low Reynolds numbers flow condition. The performance of the flowmeter is also evaluated under different disturbed flow conditions to quantify the sensitivity of the flowmeter. The disturbances studied are single 90 degrees bend, gate valve, globe valve, and two 90 degrees out of plane bends. The overall uncertainty in the Strouhal number is within +/- 1.71%. (C) 2012 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2014-10-14T13:05:22Z
2014-10-14T13:05:22Z
2012
 
Type Article
 
Identifier SENSORS AND ACTUATORS A-PHYSICAL, 18478-85
http://dx.doi.org/10.1016/j.sna.2012.07.004
http://dspace.library.iitb.ac.in/jspui/handle/100/14476
 
Language en