State-of-the-art and prospects in study on viscous oil cavitating flows
Li Wenguang1,2
1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.School of Engineering, University of Glasgow, Glasgow, Scotland, G12 8QQ, UK
Abstract：Viscous oils can degrade the cavitation performance of a centrifugal pump, how to improve the impaired performance is a problem which we must deal with, naturally it is quite necessary to have a full understanding of characteristics of viscous oil cavitating flows. In the paper, outcomes in the study on viscous oil cavitating flows are reviewed briefly; effects of liquid surface tension, viscosity and non-condensable gas(air)content on the characteristics are explained. The cavitation nucleation mechanism, cavitation CFD modeling and cavitation criteria are argued, a few prospects in the study on viscous oil cavitating flows are proposed as well. In conclusion, there are many experiments on viscous oil cavitating flows over a hydrofoil or through a cascade or inside a centrifugal pump that need to be done; updates in the cavitation CFD models are on demand too. Additionally the applicability of the maximum tension cavitation criterion into viscous oil cavitating flows needs to be clarified.
李文广,. 黏油空化流动研究现状与展望[J]. 排灌机械工程学报, 2015, 33(1): 1-9.
Li Wenguang,. State-of-the-art and prospects in study on viscous oil cavitating flows. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(1): 1-9.
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