Effect of Liquid Viscosity on a Liquid Jet Produced by the Collapse of a Laser-Induced Bubble near a Rigid Boundary
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概要
- 論文の詳細を見る
The collapse of a laser-induced cavitation bubble near a rigid boundary and its dependence on liquid (kinematic) viscosity are investigated experimentally by fiber-coupling optical beam deflection (OBD). Cavitation bubble tests are performed using a mixture of glycerin and water of various concentrations, and the viscosity ranges from $1.004\times 10^{-6}$ to $51.30\times 10^{-6}$ m2/s. Combining the detection principles of this detector with a widely used laser ablation model, actual liquid-jet impact forces are presented for the mentioned viscosity range. In addition, based on the model of a collapsing bubble, some characteristic parameters, such as bubble lifetime, the maximum bubble radius, and liquid-jet impact pressure, are also obtained as a function of liquid viscosity. The main conclusion is that the liquid jet is a dominant factor in cavitation damage and can be modified by liquid viscosity. A high viscosity reduces the liquid-jet impact force and cavitation erosion markedly. The mechanism of the liquid viscosity effect on cavitation erosion has also been discussed.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2009-01-25
著者
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Lu Jian
Department Of Applied Physics Nanjing University Of Science And Technology
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Ni Xiao-wu
Department Of Applied Physics Nanjing University Of Science And Technology
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Lu Jian
Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China
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Liu Xiu-mei
Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China
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He Jie
Basis Department, Nanjing Institute of Technology, Nanjing 211167, China
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Ni Xiao-wu
Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China
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