NUMERICAL SIMULATION OF SPHERICAL, CYLINDRICAL AND AXIAL BUBBLE CLOUDS COLLAPSE

来源 :水动力学研究与进展B辑 | 被引量 : 0次 | 上传用户:zjinboy
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The nonlinear dynamics of a spherical,cylindrical and axial cloud of cavitation bubbles were numerically simulated in order to learn more about the physical phenomena occurring in the cloud cavitation.The simulations employed the fully nonlinear continuum mixture equations coupled with the Gilmore equation for the dynamics of bubbles by considering the compressibility of liquid.A set of the Navier-Stokes equations was solved for the gas inside a spherical bubble,considering heat transfer through the gas inside the bubble and the liquid layer.The flow field around the cylindrical and axial cloud was obtained by solving the Navier-Stokes equations using a finite volume method and a dynamic layering mesh scheme.The calculated strength of shock wave in the liquid around the cloud was of the order of 1 × 106 Pa and the propagation of this shock wave lasted for 10 μs.The conducted investigations illustrate that the shock wave propagates before the cloud has completely collapsed.A good agreement with experimental data was observed.
其他文献
The discrete hard sphere particle model (DPM) is applied in this work to study numerically the distributions of particle and bubble granular temperatures in a b
Numerous scientific challenges arise when designing a soil monitoring network (SMN),especially when assessing large areas and several properties that are driven
本文引述电力企业文化含义,强调了建设企业文化对电力企业的作用,着重论述了建设电力企业文化的措施。 This article quotes the meaning of power enterprise culture, emp
吉林省的旅游业发展取得了一定的成就,但是在发展的同时,也应注意到吉林省旅游业在发展中存在的诸多问题。看到所面临的问题并及时进行改进,将使吉林省的旅游业更加稳步持续
The stability of a river-bed protection block in a flood event is affected by underscouring of the block.The effects of block spacing on block stability were in
The experimental studies of the flaring gate pier applied on the surface spillway in a high-arch dam show that a shock-wave will appear when the pattern of the
设计了一种新型静电驱动双向平动的MEMS变形镜,其结构包括3部分:中央下电极,4个静电驱动杠杆结构以及反射镜面(上电极).该变形镜有两种驱动模式:向下驱动模式和向上驱动模式.
随着市场经济尤其是资本运营市场的孕育发展,财务管理已成为企业管理最核心的领域。经济全球化的程度的增强,要求企业也进一步融合到全球市场,而对于要参与国际市场竞争的中
In this study,a well-designcd cxperimental setup is used to determine the rock-breaking performance of a high-pressure supercritical carbon dioxide (SC-CO2) jet
人力资源管理是每个国家的企业都需要面对的课题。目前,我国企业的人力资源管理,随着社会主义市场经济的日渐完善,受到了高度的重视。中小企业是国民经济和社会发展的重要力