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A parametric study of hydrodynamic cavitation inside globe valves

Jin, Zhi-jiang; Gao, Zhi xin; Qian, Jin Yuan LU ; Wu, Zan LU and Sunden, Bengt LU (2018) In Journal of Fluids Engineering, Transactions of the ASME 140(3).
Abstract

Hydrodynamic cavitation that occurs inside valves not only increases the energy consumption burden of the whole piping system but also leads to severe damages to the valve body and the piping system with a large economic loss. In this paper, in order to reduce the hydrodynamic cavitation inside globe valves, effects of valve body geometrical parameters including bending radius, deviation distance, and arc curvature linked to in/ export parts on hydrodynamic cavitation are investigated by using a cavitation model. To begin with, the numerical model is compared with similar works to check its accuracy. Then, the cavitation index and the total vapor volume are predicted. The results show that vapor primarily appears around the valve seat... (More)

Hydrodynamic cavitation that occurs inside valves not only increases the energy consumption burden of the whole piping system but also leads to severe damages to the valve body and the piping system with a large economic loss. In this paper, in order to reduce the hydrodynamic cavitation inside globe valves, effects of valve body geometrical parameters including bending radius, deviation distance, and arc curvature linked to in/ export parts on hydrodynamic cavitation are investigated by using a cavitation model. To begin with, the numerical model is compared with similar works to check its accuracy. Then, the cavitation index and the total vapor volume are predicted. The results show that vapor primarily appears around the valve seat and connecting downstream pipes. The hydrodynamic cavitation does not occur under a small inlet velocity, a large bending radius, and a large deviation distance. Cavitation intensity decreases with the increase of the bending radius, the deviation distance, and the arc curvature linked to in/export parts. This indicates that valve geometrical parameters should be chosen as large as possible, while the maximal fluid velocity should be limited. This work is of significance for hydrodynamic cavitation or globe valve design.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arc curvature, Bending radius, Computational fluid dynamics, Deviation distance, Globe valve, Hydrodynamic cavitation
in
Journal of Fluids Engineering, Transactions of the ASME
volume
140
issue
3
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • scopus:85032637456
ISSN
0098-2202
DOI
10.1115/1.4038090
language
English
LU publication?
yes
id
5ff4d722-077d-4cbe-836a-4b3dd368f1b1
date added to LUP
2017-11-10 10:10:58
date last changed
2018-05-29 11:18:28
@article{5ff4d722-077d-4cbe-836a-4b3dd368f1b1,
  abstract     = {<p>Hydrodynamic cavitation that occurs inside valves not only increases the energy consumption burden of the whole piping system but also leads to severe damages to the valve body and the piping system with a large economic loss. In this paper, in order to reduce the hydrodynamic cavitation inside globe valves, effects of valve body geometrical parameters including bending radius, deviation distance, and arc curvature linked to in/ export parts on hydrodynamic cavitation are investigated by using a cavitation model. To begin with, the numerical model is compared with similar works to check its accuracy. Then, the cavitation index and the total vapor volume are predicted. The results show that vapor primarily appears around the valve seat and connecting downstream pipes. The hydrodynamic cavitation does not occur under a small inlet velocity, a large bending radius, and a large deviation distance. Cavitation intensity decreases with the increase of the bending radius, the deviation distance, and the arc curvature linked to in/export parts. This indicates that valve geometrical parameters should be chosen as large as possible, while the maximal fluid velocity should be limited. This work is of significance for hydrodynamic cavitation or globe valve design.</p>},
  articleno    = {031208},
  author       = {Jin, Zhi-jiang and Gao, Zhi xin and Qian, Jin Yuan and Wu, Zan and Sunden, Bengt},
  issn         = {0098-2202},
  keyword      = {Arc curvature,Bending radius,Computational fluid dynamics,Deviation distance,Globe valve,Hydrodynamic cavitation},
  language     = {eng},
  month        = {03},
  number       = {3},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  series       = {Journal of Fluids Engineering, Transactions of the ASME},
  title        = {A parametric study of hydrodynamic cavitation inside globe valves},
  url          = {http://dx.doi.org/10.1115/1.4038090},
  volume       = {140},
  year         = {2018},
}