不同曳力模型及颗粒碰撞恢复系数对短接触旋流反应器内气固流场的影响

doi:10.3969/j.issn.0438-1157.2014.06.012

化工学报 ›› 2014, Vol. 65 ›› Issue (6): 2034-2041.DOI: 10.3969/j.issn.0438-1157.2014.06.012

不同曳力模型及颗粒碰撞恢复系数对短接触旋流反应器内气固流场的影响

王振波^1,2, 张玉春², 徐春明¹

1. 中国石油大学(北京)重质油国家重点实验室, 北京昌平 102249;
2. 中国石油大学(华东)重质油国家重点实验室, 山东青岛 266580

收稿日期:2013-09-09 修回日期:2014-01-20 出版日期:2014-06-05 发布日期:2014-06-05
通讯作者: 王振波
作者简介:王振波（1971- ），男，博士，教授。
基金资助:
国家自然科学基金项目（21276281）；中国石油大学重质油国家重点实验室开放基金项目（SKLOP201103008）。

Effect of drag model and restitution coefficient on gas-solids flow field in quick-contact cyclone reactors

WANG Zhenbo^1,2, ZHANG Yuchun², XU Chunming¹

1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;
2. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, China

Received:2013-09-09 Revised:2014-01-20 Online:2014-06-05 Published:2014-06-05
Supported by:
supported by the National Natural Science Foundation of China (21276281) and the State Key Laboratory of Heavy Oil Foundation (SKLOP201103008).

摘要/Abstract

摘要： 为考察曳力模型和颗粒碰撞恢复系数对短接触旋流反应器内流动特性的影响，基于双流体模型，结合颗粒动力学理论，对反应器内气固两相流场进行模拟研究。分别采用Gidaspow、Wen & Yu和Syamlal-O’Brien 3种曳力模型，考察颗粒速度特性以及固含率径向分布。对比分析不同曳力模型的计算结果表明，Syamlal-O’Brien模型计算结果与实验结果误差较大，Wen & Yu模型在反应器边壁附近区域的计算结果误差较大，Gidaspow模型计算结果与实验结果最为吻合。此外，颗粒碰撞恢复系数较小时，所得计算值小于实验测量值，当恢复系数为0.95时颗粒扩散效果最好，计算结果与实验数据吻合度最高。

关键词: 多相反应器, 两相流, 曳力模型, 碰撞恢复系数, 数值模拟

Abstract: Gas-solids two-phase flow in a quick-contact cyclone reactor was simulated using a two-fluid model combining with kinetic theory of granular flow to study the effects of drag model and restitution coefficient on flow behavior. Three drag models, i.e. Gidaspow, Wen & Yu and Syamlal-O'Brien model were examined through comparing there effects on particle velocity vector, and radial distribution of particles. Compared with experimental data, it was found that the simulated results using Gidaspow model agreed well with the experimental data while Syamlal-O'Brien and Wen & Yu models showed relatively large errors. In addition, the simulated solids holdup was less than the experimental data when restitution coefficient was relatively small. When restitution coefficient was about 0.95, particles were distributed most uniformly and the simulated results fitted the best with experimental data.

Key words: multiphase reactor, two-phase flow, drag model, restitution coefficient, numerical simulation

中图分类号:

TQ051.8

王振波, 张玉春, 徐春明. 不同曳力模型及颗粒碰撞恢复系数对短接触旋流反应器内气固流场的影响[J]. 化工学报, 2014, 65(6): 2034-2041.

WANG Zhenbo, ZHANG Yuchun, XU Chunming. Effect of drag model and restitution coefficient on gas-solids flow field in quick-contact cyclone reactors[J]. CIESC Journal, 2014, 65(6): 2034-2041.

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不同曳力模型及颗粒碰撞恢复系数对短接触旋流反应器内气固流场的影响

Effect of drag model and restitution coefficient on gas-solids flow field in quick-contact cyclone reactors

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