A new cavitation model considering inter-bubble action

A new cavitation model considering inter-bubble action
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考虑气泡间作用的新空化模型

DOI:
10.1016/j.ijnaoe.2021.05.005
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发表时间:
2021-06
影响因子:
2.2
通讯作者:
Lai bing jia
Lai bing jia
中科院分区:
工程技术3区
文献类型:
--
作者:
Yazhen Shi;Kai Luo;Xiao-Peng Chen;Daijin Li;Lai bing jia

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空化过程包括小气泡的产生、生长、合并和破裂,并受气泡-气泡相互作用的极大影响。为了理解这些相互作用,本文提出了一种新的基于输运方程的空化模型。分析了修正的Rayleigh-Plesset方程,通过假设等大小的球形气泡云来确定气泡的生长速率。然后根据气泡与气泡相互作用下的气泡生长速率推导出输运方程中的源项。该模型通过各种试验模拟得到了验证,包括微观气泡云演化以及宏观二维和三维空化流。与以前的模型,即Kunz和Zwart空化模型相比,新提出的模型不需要可调参数,并且通常在微观和宏观情况下都能得到更好的预测。这个模型更物理。
The process of cavitation involves generation, growth, coalescence, and collapse of small bubbles and is tremendously influenced by bubble–bubble interactions. To understand these interactions, a new cavitation model based on the transport equation is proposed herein. The modified Rayleigh–Plesset equation is analyzed to determine the bubble growth rate by assuming equal-sized spherical bubble clouds. The source term in the transport equation is then derived according to the bubble growth rate with the bubble-bubble interaction. The proposed model is validated by various test simulations, including microscopic bubble cloud evolution as well as macroscopical two- and three-dimensional cavitating flows. Compared with previous models, namely the Kunz and Zwart cavitation models, the newly proposed model does not require adjustable parameters and generally results in better predictions both microscopic and macroscopical cases. This model is more physical.
异常噪声的产生:空化尖端涡流的鸣叫
DOI: 10.1103/physrevfluids.2.053602
发表时间: 2017-05
影响因子: 2.7
作者:
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DOI: 10.1103/physreve.99.043108
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期刊: Physical Review E
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影响因子: 2.8
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发表时间: 2018-12
期刊: Physics of Fluids
影响因子: 4.6
作者:
M. Adama Maiga;O. Coutier-Delgosha;D. Buisine
通讯作者: M. Adama Maiga;O. Coutier-Delgosha;D. Buisine