| 单鸣雷,杨 雨,胡青晨,姚 澄,朱昌平,向 衍,盛金保.近复杂几何固壁空泡溃灭的伪势格子Boltzmann建模*[J].,2018,37(3):307-314 |
| 近复杂几何固壁空泡溃灭的伪势格子Boltzmann建模* |
| Modeling for collapsing cavitation bubble near complex geometry solid wall by improved pseudopotential lattice Boltzmann model |
| 投稿时间：2017-06-24 修订日期：2018-04-19 |
| 中文摘要: |
| 格子Boltzmann方法伪势多相模型具有高效性和复杂几何边界实施的简易性，可用于研究复杂几何固壁附近空泡溃灭阶段的动力学特征。本文采用改进作用力的伪势多相模型，通过提取最优参数可实现最大程度的热力学一致性，进而提高多相模型的密度比和稳定性。并分别从伪速度、网格不变性、Young-Laplace定律等方面研究了改进伪势多相模型的性能。通过改进的伪势多相模型来模拟复杂几何固壁附近空泡溃灭过程。同时分析了空化泡溃灭阶段的密度场、压力场和速度场演化过程，以及复杂几何固壁附近的空泡动力学特性。结果表明，伪势格子Boltzmann方法在探索空泡溃灭和复杂几何固壁间的相互作用规律研究中是一种有效的工具。 |
| 英文摘要: |
| The pseudopotential multi-phase model of the lattice Boltzmann method(LBM) is used to study the collapsing cavitation bubble near complex geometrical solid wall. In this paper, an improved forcing scheme, which can achieve thermodynamic consistency by optimizing related parameters, is adopted to improve density ratio and stability. The performance of the improved pseudopotential multi-phase model is studied from three aspects: the spurious current, the independence of grid and the verification of the Young-Laplace law. The cavitation bubble collapse near complex geometrical solid wall is modeled by the improved the pseudopotential multi-phase LBM. Meanwhile, the density field, pressure fields and velocity field evolution process of cavitation bubble collapsing stage are analyzed, as well as the dynamic characteristics of the cavitation bubble collapsing near complex geometrical solid wall. The results show that the pseudopotential multi-phase LBM is an effective tool to investigate the interaction between the collapsing bubble and complex geometrical solid wall. |
| DOI：10.11684/j.issn.1000-310X.2018.03.001 |
| 中文关键词: 格子Boltzmann方法，改进伪势模型，空泡溃灭，复杂几何固壁 |
| 英文关键词: Lattice Boltzmann method Improved pseudopotential model cavitation collapsing complex geometry solid wall |
| 基金项目:国家重点研发计划（2016YFC0401606）、江苏省重点研发计划（BE2016056）、中央高校业务经费项目（2017B17814 |
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