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Review of numerical models of cavitating flows with the use of the homogeneous approach

机译:使用均质方法回顾空化流动的数值模型

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The focus of research works on cavitation has changed since the 1960s; the behaviour of a single bubble is no more the area of interest for most scientists. Its place was taken by the cavitating flow considered as a whole. Many numerical models of cavitating flows came into being within the space of the last fifty years. They can be divided into two groups: multi-fluid and homogeneous (i.e., single-fluid) models. The group of homogenous models contains two subgroups: models based on transport equation and pressure based models. Several works tried to order particular approaches and presented short reviews of selected studies. However, these classifications are too rough to be treated as sufficiently accurate. The aim of this paper is to present the development paths of numerical investigations of cavitating flows with the use of homogeneous approach in order of publication year and with relatively detailed description. Each of the presented model is accompanied by examples of the application area. This review focuses not only on the list of the most significant existing models to predict sheet and cloud cavitation, but also on presenting their advantages and disadvantages. Moreover, it shows the reasons which inspired present authors to look for new ways of more accurate numerical predictions and dimensions of cavitation. The article includes also the division of source terms of presented models based on the transport equation with the use of standardized symbols.
机译:自1960年代以来,关于空化的研究工作的重点已经改变。对于大多数科学家来说,单个气泡的行为不再是人们关注的领域。它的位置被视为整体的空化流所取代。在过去的五十年中,出现了许多空化流动的数值模型。它们可以分为两类:多流体模型和均质(即单流体)模型。一组同质模型包含两个子组:基于输运方程的模型和基于压力的模型。一些作品试图对特定方法进行排序,并简要介绍了所选研究。但是,这些分类太粗糙而不能被视为足够准确。本文的目的是按照发布年份的顺序并使用相对详细的描述,介绍采用均质方法进行空化流数值研究的发展路径。每个提出的模型都附带有应用领域的示例。这篇综述不仅着眼于最重要的现有模型来预测薄板和云汽蚀,还着重介绍了它们的优缺点。此外,它显示了激发当前作者寻求更准确的数值预测和气穴尺寸的新方法的原因。文章还包括使用标准化符号根据运输方程对提出的模型的源项进行划分。

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