A turbulent two-phase model for predicting cavitating flow based on homogenous nucleation theory
A turbulent two-phase model for predicting cavitating flow based on homogenous nucleation theory
复制标题
基于均质成核理论的空化流预测的湍流两相模型
DOI：
10.1016/j.icheatmasstransfer.2018.06.001
复制
发表时间：
2018-10
影响因子：
7
通讯作者：
Yonghong Tang
中科院分区：
文献类型：
--
作者：
Donghua Li;Shenghua Liu;Yanju Wei;Tongtong Ren;Yonghong Tang
Cavitation is important for good design and performance on engineering machinery, especially for devices such as injector nozzles. In this study, an enhanced cavitation model is proposed with the consideration of vapor transport, bubble dynamics, nucleation, turbulence and the dissolved gas. Based on the classical nucleation theory (CNT), the analysis of nucleation formation process has been carried out in this model. The bubble size distribution obtained from experimental data is also taken into account in this model. Besides, the turbulence effect on the pressure fluctuations is discussed based on the Boussinesq approximation. According to Henry's law, the dissolved gas effect is incorporated into this model by dividing dissolved gas into several different amount and types of gases. All the coefficients used in this model can be either set at recommended values or obtained from previous experiments. The validation of this model is conducted on the experiments of sharp-edged orifice and the NASA CR-2156 hydrofoil. The results show that the proposed model is in good agreement with experiments. This model is also extended into a vortex form in order to simulate the string cavitation phenomenon observed in the visualized multi-orifice diesel nozzle experiment. The proposed model has captured the string cavitation phenomenon and made a preliminary investigation on vortex cavitation inside diesel nozzle.
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DOI：
10.1016/j.ijheatfluidflow.2017.10.001
发表时间：
2017-12
影响因子：
2.6
作者：
H. Lee;Hojin Choi;K. Hwang;Dong-Chang Park;Seongki Min
通讯作者：
H. Lee;Hojin Choi;K. Hwang;Dong-Chang Park;Seongki Min
影响因子：
7.2
作者：
zhang
通讯作者：
zhang
高压柴油喷孔内喷油压力脉动与非定常空化过程关系的数值研究
影响因子：
7.4
作者：
Su, Wanhua;Wang, Xiang
通讯作者：
Wang, Xiang
影响因子：
15.6
作者：
BLANDER, M
通讯作者：
BLANDER, M
影响因子：
2.8
作者：
R. Kunz;D. Boger;D. R. Stinebring;T. Chyczewski;J. Lindau;H. Gibeling;S. Venkateswaran;T. Govindan-T.-Govin
通讯作者：
R. Kunz;D. Boger;D. R. Stinebring;T. Chyczewski;J. Lindau;H. Gibeling;S. Venkateswaran;T. Govindan-T.-Govin