LAPSE:2019.1260
Published Article
LAPSE:2019.1260
Numerical Analysis of the Diaphragm Valve Throttling Characteristics
Yingnan Liu, Liang Lu, Kangwu Zhu
December 3, 2019
The throttling characteristics of the diaphragm valve are numerically studied in this paper. Firstly, the diaphragm deformation performance is analyzed by a finite element method, while the upper boundary morphology of the internal flow field under different valve openings was obtained. Then the two-dimensional simulation of the weir diaphragm valve flow field is carried out in order to explore the optimal design of flow path profile. The study shows that the throttling characteristics can be improved by flatting the ridge side wall, widening the top of the ridge and gently flatting the internal protruding of the flow path. In addition, using the local grid encryption techniques based on velocity gradient adaptive and y+ adaptive can improve the accuracy of simulation results. Finally, a cavitation two-phase flow simulation is carried out. The results show that cavitation may occur below 50% opening of diaphragm valve in ultra-pure water system, which becomes more intense with the increase of inlet pressure and even leading to flow saturation on the micro-orifice state.
Keywords
Computational Fluid Dynamics, diaphragm valve, profile design optimize, throttling characteristics
Suggested Citation
Liu Y, Lu L, Zhu K. Numerical Analysis of the Diaphragm Valve Throttling Characteristics. (2019). LAPSE:2019.1260
Author Affiliations
Liu Y: School of Mechanical Engineering, Tongji University, Shanghai 200092, China
Lu L: School of Mechanical Engineering, Tongji University, Shanghai 200092, China
Zhu K: Shanghai Institute of Aerospace Control Technology, Shanghai 201109, China; Shanghai Servo System Engineering Technology Research Center, Shanghai 201109, China
Journal Name
Processes
Volume
7
Issue
10
Article Number
E671
Year
2019
Publication Date
2019-09-28
Published Version
ISSN
2227-9717
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PII: pr7100671, Publication Type: Journal Article
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LAPSE:2019.1260
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doi:10.3390/pr7100671
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Dec 3, 2019
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Dec 3, 2019
 
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Original Submitter
Calvin Tsay
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