Interface and surface tension in incompressible lattice Boltzmann multiphase model
Interface and surface tension in incompressible lattice Boltzmann multiphase model
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DOI：
10.1016/s0010-4655(00)00099-0
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发表时间：
2000-07
影响因子：
6.3
通讯作者：
Raoyang Zhang;Xiaoyi He;Shiyi Chen
中科院分区：
文献类型：
--
作者：
Raoyang Zhang;Xiaoyi He;Shiyi Chen
本文研究了He等人最近提出的不可压缩晶格玻尔兹曼多相模型的界面动力学和表面张力。第一版。物理学报，52(1999):642。该模型使用具有分子相互作用的指数流体来跟踪不同相及其之间的界面。当分子相互作用足够强时，指标流体自动分离成两个不同的相。表面张力在模型中使用一个作为指数流体密度梯度函数的项来实现。表面张力的强度取决于分子间的相互作用，并且可以通过一个自由参数来方便地调节。通过对多种具有表面张力的流动条件进行数值模拟，验证了该模型的有效性。
This paper studies the interfacial dynamics and surface tension in an incompressible lattice Boltzmann multiphase model proposed recently by He et al. [J. Comput. Phys. 152 (1999) 642]. The model tracks different phases and the interface between them using an index fluid with molecular interaction. When the molecular interaction is strong enough, the index fluid automatically segregates into two different phases. The surface tension is implemented in the model using a term as a function of the gradient of the index fluid density. The strength of the surface tension depends on the molecular interaction, and can be adjusted conveniently by a free parameter. Numerical simulations for a variety of flow conditions with surface tension are carried out to demonstrate the capability of the model.