Abstract
As the key control equipment for the transmission of fluid medium, processing valves are widely used in the transmission systems of fluid medium in energy, chemical industry, metallurgy and other fields, which play important roles in the stability and reliability of the system operation. When the flow cross-section is operated in a sudden change, the pressure decreases rapidly at the downstream, which leads to the cavitation in the processing valves. Cavitation makes serious erosion and damage on the valve core and pipeline surface, which makes the leakage and noise problems in processing valves. This seriously affects the regulation performance and lifetime of processing valves. In this article, numerical simulations were carried out to investigate the transient cavitation in a model butterfly valve. By considering effects of local pressure on formation of cavitation, a modified model for calculating the diameter of cavitation bubbles was derived. Effects of valve opening degree were investigated on the dynamic evolution of cavitation by analyzing formation, development and collapse of cavitation. The generation, development and collapse of single cavitation bubble was obtained and discussed in details to state the interaction between vortices and cavitation. Attached and quasi-periodic cavitation were observed and analyzed at different valve opening degrees in detail as well.
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Acknowledgments
This research was funded by National Natural Science of China (Granted No. 51906222 and 51976198), Key Research and Development Program of Zhejiang Province (Granted No. 2020C01027), and Zhejiang Sci-Tech University (Granted No. 18022135-Y).
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Guang Zhang received his B.S. in Mechanical Engineering from Three Gorges University, China, in 2012. He received his M.S. and Ph.D. degrees in Mechanical Engineering from Andong National University, Korea, in 2015 and 2018, respectively. Currently, Dr. Zhang is an Associate Professor at Zhejiang Sci-Tech University, China. His research interests include cavitation and noise in fluid mechinary, multiphase flows, nozzle flows, micro shock wave and train-tunnel wave.
Zhe Lin received his B.S. in Fluid Engineering from Zhejiang Sci-Tech University, China, in 2008. He received his M.S. and Ph.D. degrees in Fluid Engineering from Zhejiang University, China, in 2010 and 2013, respectively. Currently, Dr. Lin is a Professor at Zhejiang Sci-Tech University, China. His research interests include processing valve, multiphase flows, cavitating flows, solid particle and droplet collision.
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Zhang, G., Wu, Z.Y., Wu, K.X. et al. Effect of the opening of a butterfly valve on the dynamic evolution of cavitation. J Mech Sci Technol 36, 3457–3467 (2022). https://doi.org/10.1007/s12206-022-0623-7
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DOI: https://doi.org/10.1007/s12206-022-0623-7