An Investigation of the Water Flow Past the Butterfly Valve

This paper presents a numerical simulation of flow past the butterfly valve using Commercial Fluid Dynamics software FLUENT. In static analysis, the positions of the disk were set to be 0 (completely opened), 30, 45, 60 and 75 under 1, 2 and 3 m/s water speed. The angular velocities were set to be 0...

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Bibliographic Details
Published in:Proceedings of the 10th International Conference 2009-10, Vol.1225, p.562-575
Main Authors: Chaiworapuek, Weerachai, Champagne, Jean-Yves, El Haj Em, Mahmoud, Kittichaikan, Chawalit
Format: Article
Language:English
Subjects:
Angular speed
Angular velocity
Butterfly valves
Coefficients
Computational fluid dynamics
Computer programs
Computer simulation
Disks
Dynamic tests
Dynamics
Mathematical models
Software
Torque
Water flow
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Summary:This paper presents a numerical simulation of flow past the butterfly valve using Commercial Fluid Dynamics software FLUENT. In static analysis, the positions of the disk were set to be 0 (completely opened), 30, 45, 60 and 75 under 1, 2 and 3 m/s water speed. The angular velocities were set to be 0.039 and 1.57 rad/s under 1 m/s water speed in dynamic analysis. The study focuses on the investigation of the characteristic of loss coefficient and torque behavior of the 150 mm and 300 mm in diameter butterfly valves. From the results obtained, it was found that the loss coefficient and torque increased when the disk angle was increased By increasing the water speed, the loss coefficient remained constant while the torque increased. In dynamic analysis of both angular speeds, the maximum torque occurred at 70-80 in closing turn and 100-110 in opening turn. The experiment was also carried out to verify the numerical results. By comparing between the experimental and numerical results, it was found that the loss coefficients and torques obtained from these methods were similar.
ISSN:0094-243X