SIMULATION OF HIGH-SPEED CAVITATING FLOWS IN CHANNELS

被引：2
作者：
Isaenko, I. I. [1 ]
Makhnov, A., V [1 ]
Smirnov, E. M. [1 ]
Schmidt, A. A. [2 ,3 ]
机构：
[1] Peter Great St Petersburg Polytech Univ, 29 Politech Skaya St, St Petersburg 195251, Russia
[2] Russian Acad Sci, Ioffe Inst, St Petersburg, Russia
[3] Peter Great St Petersburg Polytech Univ, Ioffe Inst, RAS, 26 Politech Skaya St, St Petersburg 194021, Russia
来源：
ST PETERSBURG POLYTECHNIC UNIVERSITY JOURNAL-PHYSICS AND MATHEMATICS | 2018年 / 11卷 / 01期
关键词：
high-speed flow; cavitation; Rayleigh-Plesset equation; multiphase medium;
D O I：
10.18721/JPM.11106
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Cavitation is a process of vapour and gas bubbles formation in a liquid flow. It occurs when a flow pressure drops below a certain level depending on liquid's physical properties and its temperature. One of the important factors of cavitation is the presence of unsolved microscopic bubbles filled with gas and/or vapour in real liquids. These bubbles, or nucleation sites, evolve under pressure drops that are sufficient for evaporation of surrounding liquid. A model of cavitating flows based on Euler - Lagrange description of multiphase medium has been developed. It took into account heterogeneous nature of cavitation bubbles formation. The Rayleigh - Plesset equation along with interphase mass and energy transfer equations were used to simulate bubbles evolution. The developed model provides qualitatively accurate prediction of cavity shape and its borders position in comparison with the experimental data.
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页码：55 / 65
页数：11
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