Numerical simulation of gas-liquid-solid flows using a combined front tracking and discrete particle method
Numerical simulation of gas-liquid-solid flows using a combined front tracking and discrete particle method
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DOI：
10.1016/j.ces.2005.04.038
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发表时间：
2005-11-01
影响因子：
4.7
通讯作者：
Kuipers, JAM
中科院分区：
文献类型：
--
作者：
Annaland, MS;Deen, NG;Kuipers, JAM
本文提出了一种混合模型，用于气-液-固流的数值模拟，使用组合前沿跟踪（FT）和离散粒子（DP）方法，分别应用于连续液相中存在的分散气泡和固体颗粒。硬球 DP 模型最初由 Hoomans 等人开发。 [1996。 Chemical Engineering Science 51, 99-108] 对于致密气固系统，已扩展到考虑作用于粘性液体中悬浮颗粒的所有附加力，并与 Deen 等人最近提出的 FT 模型相结合。 [2004a。第五届多相流国际会议记录光盘，ICMF'04，日本横滨，2004 年 5 月 30 日至 6 月 4 日； 2004b. Chemical Engineering Science 59, 1853-1861] 用于复杂的自由表面流动。在本文中，将介绍组合 FT-DP 模型的物理基础以及突出该混合模型功能的说明性计算结果。研究了气泡诱导颗粒混合的效果，重点关注体积颗粒浓度的影响。此外，由于悬浮固体颗粒的存在，对气泡上升速度的延迟效应（阻力修改）已被量化。 (c) 2005 Elsevier Ltd. 保留所有权利。
In this paper a hybrid model is presented for the numerical simulation of gas-liquid-solid flows using a combined front tracking (FT) and discrete particle (DP) approach applied for, respectively, dispersed gas bubbles and solid particles present in the continuous liquid phase. The hard sphere DP model, originally developed by Hoomans et al. [1996. Chemical Engineering Science 51, 99-108] for dense gas-solid systems, has been extended to account for all additional forces acting on particles suspended in a viscous liquid and has been combined with the FT model presented recently by Deen et al. [2004a. CD-ROM Proceedings of Fifth International Conference on Multiphase Flow, ICMF'04, Yokohama, Japan, May 30-June 4, 2004; 2004b. Chemical Engineering Science 59, 1853-1861] for complex free surface flows. In this paper, the physical foundation of the combined FT-DP model will be presented together with illustrative computational results highlighting the capabilities of this hybrid model. The effect of bubble-induced particle mixing has been studied focusing on the effect of the volumetric particle concentration. In addition the retarding effect (drag modification) on the bubble rise velocity due to the presence of the suspended solid particles has been quantified. (c) 2005 Elsevier Ltd. All rights reserved.