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The vibration analysis of a novel vortex flowmeter based on fiber bragg grating

  • Huijuan Dong*
  • , Yong Cai
  • , Jun He
  • , Renbing Liu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A novel fiber Bragg grating vortex flowmeter was designed in this work, where the Bragg grating was enfolded in a cylinder eddy generator. Bragg grating subject to force and the corresponding strain were analyzed. Subsequently, the relationships between grating's axial strain and flow were developed. In order to improve the flowmeter's resolution, the system was simplified by a mass-spring-damper model, which was used to analyze resonance and choose acrylic glass as cylinder's material. In terms of the resolution of FBG sensor demodulation device and factors of vortex's formation, the measuring range of flowmeter is 1200L/h~5000L/h. The resolution is less than 40L/h with flow exceeding 2000L/h. The damping ratio is not sensitive to the flow when it is less than 2000L/h.

Original languageEnglish
Title of host publicationAdvanced Research on Material Engineering and Its Application
Pages526-531
Number of pages6
DOIs
StatePublished - 2012
Externally publishedYes
Event2012 2nd International Conference on Information Science, Automation and Material System, ISAM 2012 - Changsha, China
Duration: 21 Apr 201222 Apr 2012

Publication series

NameApplied Mechanics and Materials
Volume485
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 2nd International Conference on Information Science, Automation and Material System, ISAM 2012
Country/TerritoryChina
CityChangsha
Period21/04/1222/04/12

Keywords

  • Bragg grating
  • Resonance analysis
  • Vortex flowmeter

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