The Vibration Analysis of a Novel Vortex Flowmeter Based on Fiber Bragg Grating

Hui Juan Dong; Yong Cai; Jun He; Ren Bing Liu

doi:10.4028/www.scientific.net/AMR.485.526

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 485The Vibration Analysis of a Novel Vortex Flowmeter...

The Vibration Analysis of a Novel Vortex Flowmeter Based on Fiber Bragg Grating

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.

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Periodical:

Advanced Materials Research (Volume 485)

Pages:

526-531

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.485.526

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Online since:

February 2012

Authors:

Hui Juan Dong, Yong Cai, Jun He, Ren Bing Liu

Keywords:

Bragg Grating, Resonance Analysis, Vortex Flowmeter

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