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TECHNICAL PAPERS

An Advanced Numerical Model for Single Straight Tube Coriolis Flowmeters

[+] Author and Article Information
Tao Wang, Roger C. Baker

Department of Engineering, University of Cambridge, Cambridge, CB2 1RX UK

Yousif Hussain

 Krohne Ltd., Wellingborough, NN8 6AE UK

J. Fluids Eng 128(6), 1346-1350 (Apr 05, 2006) (5 pages) doi:10.1115/1.2353266 History: Received March 29, 2005; Revised April 05, 2006

A detailed numerical model has been developed to simulate the single straight tube Coriolis flowmeter, which includes all important practical features. The measuring tube is modeled as fluid-tube interaction elements characterized as mass, stiffness, and damping matrices based on the theories of fluid-structure interaction and finite element method. Other features, such as the inner and outer cases and the driver spring, are modeled as standard ANSYS beam and shell elements and coupled to the measuring tube. The modal frequency and sensitivity factor from experiments are used to validate the model. In particular, our results show that the modal behaviour of the meter can only be adequately modeled if these practical features are included.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figure 1

A schematic view of a modern design

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Figure 2

A fluid-tube interaction element

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Figure 3

A section view of the complete finite element model

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Figure 4

Comparison of the drive frequency for water

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Figure 5

Comparison of the sensitivity factor for full-scale water flow

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Figure 6

Comparison of amplitude ratio of flange to driver for three simulated cases

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Figure 7

The effects of a driver spring

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