Weight vector study of velocity profile effects in straight-tube Coriolis flowmeters employing different circumferential modes
Kutin, Jože (Author), Hemp, John (Author), Bobovnik, Gregor (Author), Bajsič, Ivan (Author)

URLURL - Presentation file, Visit http://dx.doi.org/10.1016/j.flowmeasinst.2005.04.008 This link opens in a new window

The weight vector theory is applied to evaluate the effects of velocity profile on the sensitivity of Coriolis mass flowmeters employing different circumferential modes of a straight measuring tube. The study is limited to fully developed, axisymmetric steady flow. The measuring tube is modelled as athin, elastic shell with clamped ends, and the vibrational fluid motion inside the vibrating tube is determined using potential flow theory. By applying a power series expansion with respect to the aspect ratio of the tube, the general form of the weight function is simplified, allowing (approximate) analytical evaluations of profile effects. The results show thatlarge velocity profile effects are expected for the higher circumferential(shell-type) modes and rather lower (but generally also significant) velocity profile effects for the first circumferential (beam-type) mode.

Keywords:Coriolis flowmeter, circumferential modes, weight vector theory, velocity profile effect
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 375-385
Numbering:Letn. 16, št. 6
ISSN on article:0955-5986
COBISS.SI-ID:8469275 Link is opened in a new window
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Record is a part of a journal

Title:Flow measurement and instrumentation
Shortened title:Flow meas. instrum.
COBISS.SI-ID:169755 This link opens in a new window

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