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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2007, Vol. 8 Issue (9): 1422-1428    DOI: 10.1631/jzus.2007.A1422
Civil Engineering & Mechanics     
Study on hydrodynamic vibration in fluidic flowmeter
WANG Chi-yu, ZOU Jun, FU Xin, YANG Hua-yong
Institute State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
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Abstract  The characteristics of the fluidic flowmeter, which is a combination of impinged concave wall and bistable fluid amplifier, is investigated by experimental studies and numerical simulations. The numerical approaches are utilized to examine the time dependent flow field and pressure field inside the proposed flowmeter. The effect of varying structural parameters on flow characteristics of the proposed fluidic flowmeter is investigated by computational simulations for the optimization. Both the simulation and experimental results disclose that the hydrodynamic vibration, with the same intensity, frequency and 180° phase shift, occurs at axisymmetric points in the feedback channel of the fluidic flowmeter. Using the structural combination of impinged concave wall and bistable fluid amplifier and differential signal processing technique, a novel fluidic flowmeter with excellent immunity and improved sensibility is developed.

Key words： Flowmeter      Fluidic      Hydrodynamic vibration      Coanda effect     
Received: 10 March 2007     
CLC:  TH137  
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WANG Chi-yu
ZOU Jun
FU Xin
YANG Hua-yong
Cite this article:

WANG Chi-yu, ZOU Jun, FU Xin, YANG Hua-yong. Study on hydrodynamic vibration in fluidic flowmeter. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2007, 8(9): 1422-1428.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2007.A1422     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2007/V8/I9/1422

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