气固颗粒系统模拟的研究进展

发布时间：2018-01-03 01:02

本文关键词：气固颗粒系统模拟的研究进展　出处：《化学反应工程与工艺》2016年03期 　论文类型：期刊论文

【摘要】：综述了气固颗粒系统模拟方法的发展状况。首先,从宏观、中观及直接数值模拟角度对基于欧拉-欧拉架构下的双流体模型、拉格朗日-欧拉架构下的离散气泡模型以及欧拉-拉格朗日架构下的计算流体力学和离散单元法耦合模型(CFD-DEM)及直接数值模拟方法就模型基本原理、计算量、预测精度以及应用前景等方面进行对比和分析。接着,针对工程应用前景较强的双流体模型和CFD-DEM模型进行了详细阐述,着重强调了欧拉架构下的模型植入过程,颗粒相的动力学过程和微观行为描述、两相耦合作用及相间耦合模型描述。基于欧拉-拉格朗日架构下的多相耦合模型的普适性,模型的应用已经从研究尺度的模拟逐渐走向工程尺度的模拟,成为今后研究多相颗粒系统的热点。
[Abstract]:Reviews the development of simulation method of gas solid particle system. First of all, from the macro perspective, simulation of the Euler Euler two fluid model based on meso and direct numerical CFD discrete bubble model under the framework of the Lagrange Euler and Euler Lagrange framework and coupling model of discrete element method (CFD-DEM) and direct numerical simulation method on the basic principle, model calculation, prediction accuracy and application prospects are compared and analyzed. Then, aiming at the prospect of engineering application of strong double fluid model and CFD-DEM model in detail, emphasize the process model into the Eulerian framework, describing the dynamics process of particles and micro behavior description, two-phase coupling effect and the coupling model. Under the framework of the Euler Lagrange multiphase coupling model based on universal model, should have From the simulation of research scale to the simulation of engineering scale, it has become a hot spot in the study of multiphase particle system in the future.

【作者单位】：西安交通大学人居环境与建筑工程学院;
【基金】：国家自然科学基金(21306145) 国家重大科技专项(2016ZX05011001-002)
【分类号】：O359
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