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气-液-固三相耦合的 格子Boltzmann多相多组分模型
Gas-liquid-solid three-phase coupled lattice Boltzmann multiphase multicomponent model
投稿时间:2017-12-25  修订日期:2018-03-11
DOI:
中文关键词:  格子Boltzmann方法  多相多组分  伪势模型  移动边界  界面跟踪
英文关键词:Lattice Boltzmann method  multiphase flow  pseudo-potential model  moving boundary  interface capture
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
崔静 中国民航大学--机场学院 tgzyonglhl@163.com 
李虎林 中国民航大学--机场学院  
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中文摘要:
      格子Boltzmann方法在多相流领域的研究,目前主要集中在两相/两组分(气-液,液-固,液-液)流动及耦合换热的物理问题。本文综合应用Shan-Chen多相流模型、移动边界模型、动量交换法和新增流体格点插值等方法,构建了一个能够描述气/液-液-固三相耦合作用机制多相多组分模型。该模型能够描述相间/组分间作用力;能够追踪固体颗粒的碰撞、反弹、迁移等行为;能够捕捉液滴的形变、破碎等动力学特性。本文使用该模型模拟了单个液滴与单个固体颗粒在气相空间内对撞的动力学行为,分析了液滴韦伯数和颗粒雷诺数对二者碰撞动力学特性的影响,模拟结果表明,本文所构建的模型可以准确的描述气液固三相之间的耦合作用机制。
英文摘要:
      The lattice Boltzmann method in the field of multiphase flow research is mainly focused on the physical problems of two - phase / two - component (gas - liquid, liquid - solid, liquid - liquid) flow and coupled heat transfer. In this paper, we use the Shan-Chen multiphase flow model, the moving boundary model, the momentum exchange method and the new fluid lattice interpolation method to construct a multiphase model that can describe three - phase coupling mechanism of gas / liquid-liquid-solid .The model can describe the interaction between phases / components, it can track the solid particle of the collision, rebound, migration and other behavior; and it can capture the droplet deformation, crushing and other dynamic characteristics. In this paper, the model is used to simulate the dynamic behavior of a single droplet colliding with a single solid particle in the gas-phase space. The influence of droplet Weber number and particle Reynolds number on the dynamic characteristics of the collision is analyzed. The simulation results show that the constructed model can accurately describe the coupling mechanism between gas-liquid-solid three-phase.
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