颗粒相壁面条件对非球形颗粒流动影响的数值模拟

doi:10.11949/j.issn.0438-1157.20160405

化工学报 ›› 2016, Vol. 67 ›› Issue (8): 3251-3258.DOI: 10.11949/j.issn.0438-1157.20160405

颗粒相壁面条件对非球形颗粒流动影响的数值模拟

华蕾娜¹, 赵虎^1,2, 李军¹, 王军武¹, 朱庆山¹

1 中国科学院过程工程研究所多相复杂系统国家重点实验室, 北京 100190;
2 中国科学院大学, 北京 100049

收稿日期:2016-03-31 修回日期:2016-05-04 出版日期:2016-08-05 发布日期:2016-08-05
通讯作者: 华蕾娜
基金资助:
国家自然科学基金项目（21306202）；国家重点基础研究发展计划项目（2012CB215003）；中国科学院过程工程研究所多相复杂系统国家重点实验室基金项目（MPCS2012A02，MPCS2014A03）。

Numerical study of effect of particle wall boundary condition on fluidization of irregular particles

HUA Leina¹, ZHAO Hu^1,2, LI Jun¹, WANG Junwu¹, ZHU Qingshan¹

1 State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2016-03-31 Revised:2016-05-04 Online:2016-08-05 Published:2016-08-05
Supported by:
supported by the National Natural Science Foundation of China (21306202), the National Basic Research Program of China (2012CB215003) and the State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences (MPCS2012A02, MPCS2014A03).

摘要/Abstract

摘要：

采用双流体模型对设置竖直隔板的气固密相流化床中非球形颗粒的运动进行了模拟，颗粒形状的影响由相间曳力模型考虑，重点考察壁面处颗粒边界条件的影响。同时进行了实验室规模三维流化床的流化实验，以验证模型的有效性。通过压降轴向分布、颗粒浓度径向分布以及物料出口处颗粒质量流率功率谱估计等定量分析，结果表明：对不设置内构件的自由床，壁面反射系数对系统宏观流动特性影响较小，而对壁面处局部颗粒运动影响较大；对壁面面积大幅增加的内构件床，壁面反射系数可显著改变气体和颗粒的运动特征，取值需控制在适当范围内。

关键词: 两相流, 流化床, 内构件, 非球形颗粒, 计算流体力学, 壁面边界条件

Abstract:

The behavior of non-sphere particles in a gas-solid dense phase fluidized bed allocated with three vertical internals was simulated by the Eulerian two-fluid model. The effects of particle shapes were taken into account by an inter-phase drag model, and more effort was devoted to the effects of the boundary conditions of particles at walls. Meanwhile, experiments of a three dimensional lab-scale fluidized bed were conducted to provide available validation data. The quantitative analyses included axial profile of the pressure, radial profile of solids concentration, and power spectral density of particle mass flow rate at the bed outlet. It showed that specular reflection coefficient only affects the macroscopic behavior of the bed slightly, but the local particle motion near walls significantly for the bed without internals. While for the bed with internals featuring a remarkable increase in wall area, specular reflection coefficient can significantly influence dynamics of gas and solids. Therefore, the value of specular reflection coefficient should be selected in an appropriate range for beds with internals, to predict the system reasonably.

Key words: two-phase flow, fluidized-bed, internals, particles with irregular shapes, CFD, wall boundary condition

中图分类号:

TQ021.1

华蕾娜, 赵虎, 李军, 王军武, 朱庆山. 颗粒相壁面条件对非球形颗粒流动影响的数值模拟[J]. 化工学报, 2016, 67(8): 3251-3258.

HUA Leina, ZHAO Hu, LI Jun, WANG Junwu, ZHU Qingshan. Numerical study of effect of particle wall boundary condition on fluidization of irregular particles[J]. CIESC Journal, 2016, 67(8): 3251-3258.

参考文献 21

[1]	由长福,祁海鹰,徐旭常.气固两相流动中非球形颗粒所受曳力的数值研究[J].化工学报,2003,54(2):188-191.YOU C,QI H Y,XU X C.Numerical simulation of drag force on non-spherical particle in gas-particle two-phase flow[J].Journal of Chemical Industry and Engineering (China),2003,54(2):188-191.
[2]	ZHOU Z Y,PINSON D,ZOU R P,et al.Discrete particle simulation of gas fluidization of ellipsoidal particles[J].Chemical Engineering Science,2011,66(23):6128-6145.
[3]	RODRIGUES S S,FORRET A,MONTJOVET F,et al.Riser hydrodynamic study with different Group B powders[J].Powder Technology,2015,272:300-308.
[4]	HÖLZER A,SOMMERFELD M.New simple correlation formula for the drag coefficient of non-spherical particles[J].Powder Technology,2008,184(3):361-365.
[5]	ZHONG W Q,ZHANG Y,JIN B S,et al.Discrete element method simulation of cylinder-shaped particle flow in a gas-solid fluidized bed[J].Chemical Engineering&Technology,2009,32(3):386-391.
[6]	SHERRITT R G,CHAOUKI J,MEHROTRA A K,et al.Axial dispersion in the three-dimensional mixing of particles in a rotating drum reactor[J].Chemical Engineering Science,2003,58(2):401-415.
[7]	PEIRANO E,DELLOUME V,LECKNER B.Two-or three-dimensional simulations of turbulent gas-solid flows applied to fluidization[J].Chemical Engineering Science,2001,56(16):4787-4799.
[8]	金涌,俞芷青,张礼,等.流化床反应器塔型内构件的研究[J].化工学报,1980,41(2):117-128.JIN Y,YU Z Q,ZHANG L,et al.A study of pagoda type vertical internal baffle in gas-fluidized bed[J].Journal of Chemical Industry and Engineering (China),1980,41(2):117-128.
[9]	彭迎彬,李海广,李保卫,等.置有竖直隔板鼓泡流化床物料停留时间[J].科学技术与工程,2015,15(21):38-47.PENG Y B,LI H G,LI B W,et al.Particle residence time in a bubbling fluidized bed with inner-vertical partition plate[J].Science Technology and Engineering,2015,15(21):38-47.
[10]	郝志刚,朱庆山,李洪钟.内构件流化床内颗粒停留时间分布及压降的研究[J].过程工程学报,2006,6(2):359-363.HAO Z G,ZHU Q S,LI H Z.Particle residence time and pressure drop in a fluidized bed with internals[J].The Chinese Journal of Process Engineering,2006,6(2):359-363.
[11]	刘英杰,杨基和,蓝兴英,等.工业RFCC汽提段内颗粒混合情况的CFD模拟[J].化学反应工程与工艺,2012,28(3):213-219.LIU Y J,YANG J H,LAN X Y,et al.CFD simulation of solid residence time distribution in industrial RFCC strippers[J].Chemical Reaction Engineering and Technology,2012,28(3):213-219.
[12]	LAN X Y,XU C M,GAO J S,et al.Influence of solid-phase wall boundary condition on CFD simulation of spouted beds[J].Chemical Engineering Science,2012,69(1):419-430.
[13]	LI T W,BENYAHIA S.Evaluation of wall boundary condition parameters for gas-solids fluidized bed simulations[J].AIChE Journal,2013,59(10):3624-3632.
[14]	ALTANTZIS C,BATES R B,GHONIEM A F.3D Eulerian modeling of thin rectangular gas-solid fluidized beds:estimation of the specularity coefficient and its effects on bubbling dynamics and circulation times[J].Powder Technology,2015,270:256-270.
[15]	卢竟蔓,蓝兴英,徐春明,等.壁面条件对FCC颗粒湍动床气固流动影响的模拟[J].化学反应工程与工艺,2014,30(1):57-62.LU J M,LAN X Y,XU C M,et al.Numerical simulation on effect of wall boundary condition on gas-solid flow in FCC particles turbulent bed[J].Chemical Reaction Engineering and Technology,2014,30(1):57-62.
[16]	周新宇,高金森,徐春明,等.颗粒相壁面条件对提升管内气固流动模拟的影响[J].化工学报,2012,63(4):1063-1069.ZHOU X Y,GAO J S,XU C M,et al.Effect of solids phase wall boundary condition on simulation of gas-solids flow characteristics in riser[J].CIESC Journal,2012,63(4):1063-1069.
[17]	HUA L N,ZHAO H,LI J,et al.Eulerian-Eulerian simulation of irregular particles in dense gas-solid fluidized beds[J].Powder Technology,2015,284:299-311.
[18]	LI T W,GRACE J,BI X T.Study of wall boundary condition in numerical simulations of bubbling fluidized beds[J].Powder Technology,2010,203(3):447-457.
[19]	JOHNSSON F,ZIJERVELD R C,SCHOUTEN J C,et al.Characterization of fluidization regimes by time-series analysis of pressure fluctuations[J].International Journal of Multiphase Flow,2000,26(4):663-715.
[20]	ABBASI M,SOTUDEH-GHAREBAGH R,MOSTOUFI N,et al.Non-intrusive monitoring of bubbles in a gas-solid fluidized bed using vibration signature analysis[J].Powder Technology,2009,196(3):278-285.
[21]	JAIBOON O-A,CHALERMSINSUWAN B,MEKASUT L,et al.Effect of flow pattern on power spectral density of pressure fluctuation in various fluidization regimes[J].Powder Technology,2013,233:215-226.

颗粒相壁面条件对非球形颗粒流动影响的数值模拟

Numerical study of effect of particle wall boundary condition on fluidization of irregular particles

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