湍流聚团过程中非球形颗粒聚团碰撞频率分析研究

郑建祥; 李玉凯; 孙笑楠; 周怀春

doi:10.11949/0438-1157.20190512

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湍流聚团过程中非球形颗粒聚团碰撞频率分析研究

流体力学与传递现象 | 更新时间：2020-06-24

- 湍流聚团过程中非球形颗粒聚团碰撞频率分析研究
- Analysis of collision frequency of non-spherical particle agglomeration during turbulent agglomeration processes
- 化工学报 2019年70卷第S2期页码：228-236
- 作者机构：
  
  东北电力大学能源与动力工程学院，吉林省吉林市 132012
- 作者简介：
  
  郑建祥（1977—），男，博士，副教授，59745289@qq.com
  周怀春（1965—），男，博士，教授，hczhou@neepu.edu.cn
- 基金信息：
  
  吉林省科技厅十三五重点科技研发项目(20180201001SF);吉林市科技创新发展项目(201750238);吉林省教育厅“十三五”科研目(JJKH20190703KJ)
- DOI：10.11949/0438-1157.20190512
  中图分类号： TQ 028.8
- 收稿：2019-05-15，
  
  修回：2019-06-17，
  
  纸质出版：2019-09-05
- 稿件说明：
移动端阅览
郑建祥, 李玉凯, 孙笑楠, 周怀春. 湍流聚团过程中非球形颗粒聚团碰撞频率分析研究[J]. 化工学报, 2019, 70(S2): 228-236

ZHENG Jianxiang, LI Yukai, SUN Xiaonan, ZHOU Huaichun. Analysis of collision frequency of non-spherical particle agglomeration during turbulent agglomeration processes[J]. CIESC Journal, 2019, 70(S2): 228-236
郑建祥, 李玉凯, 孙笑楠, 周怀春. 湍流聚团过程中非球形颗粒聚团碰撞频率分析研究[J]. 化工学报, 2019, 70(S2): 228-236 DOI： 10.11949/0438-1157.20190512.

ZHENG Jianxiang, LI Yukai, SUN Xiaonan, ZHOU Huaichun. Analysis of collision frequency of non-spherical particle agglomeration during turbulent agglomeration processes[J]. CIESC Journal, 2019, 70(S2): 228-236 DOI： 10.11949/0438-1157.20190512.

摘要

基于群体平衡模型（PBM）和计算流体动力学（CFD）的耦合方法模拟了湍流聚并器中黏性颗粒的聚团过程和流化行为。考虑到流体作用力和范德华力对颗粒聚团的影响，引入了聚团碰撞效率，同时考虑非球形颗粒聚团局部孔隙率沿径向逐渐增大的影响，引入分形维数。通过碰撞效率和分形维数对碰撞频率模型进行了改进。并与EDEM模拟计算结果和实验结果进行了对比。体积分数的结果显示，EDEM模拟的结果与实验结果的平均相对误差为16.34%，而改进模型与实验结果的平均相对误差仅为7.39%。而数量分数方面，EDEM模拟的结果与实验结果的平均绝对误差为5.36%，而改进模型与实验结果的平均绝对误差仅为2.28%。因此改进模型模拟结果更接近实验结果。

Abstract

The agglomeration processes and fluidization behavior of cohesive particles in a turbulent agglomerator were simulated based on the coupled model of population balance method (PBM) and computational fluid dynamics (CFD). The agglomeration collision frequency model was improved by introducing the collision agglomeration efficiency and fractal dimension. The agglomeration collision efficiency was introduced by considering the influence of hydrodynamic force and van der Waals force on particle agglomeration. At the same time

the fractal dimension were introduced by considering the influence of the local porosity of non-spherical particle agglomeration increasing gradually in the radial direction. Thus the results of the simulation using the improved model compared with the EDEM simulation results and the experimental results. The volume fraction results show that the average relative error between the EDEM simulation results and the experimental results was 16.34%

while the average relative error between the improved model and the experimental results was only 7.39%. In terms of fraction of the agglomeration number

the average absolute error between the EDEM simulation results and the experimental results was 5.36%

while the average absolute error between the improved model and the experimental results was only 2.28%. Therefore

the improved model simulation results were closer to the experimental results.

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references

Li H , Zhang J , Zhao Y , et al . Wettability of fly ashes from four coal-fired power plants in China [J]. Industrial & Engineering Chemistry Research , 2011 , 50 ( 13 ): 7763 - 7771 .

Ilyas S U , Pendyala R , Marneni N . Preparation, sedimentation, and agglomeration of nanofluids [J]. Chemical Engineering & Technology , 2014 , 37 ( 12 ): 2011 - 2021 .

Borchert C , Sundmacher K . Crystal aggregation in a flow tube: image‐based observation [J]. Chemical Engineering & Technology , 2011 , 34 ( 4 ): 545 - 556 .

郑建祥 , 许帅 , 王京阳 , 等 . 基于微分代数积分矩量法的聚并器超细颗粒聚团研究 [J]. 化工学报 , 2017 , 68 ( 1 ): 119 - 128 .

Zheng J X , Xu S , Wang J Y , et al . Study on agglomeration of ultrafine particles by agglomerator based on differential algebraic integral moment method [J]. CIESC Journal , 2017 , 68 ( 1 ): 119 - 128 .

Li H , Hong R , Wang Z . Fluidizing ultrafine powders with circulating fluidized bed [J]. Chemical Engineering Science , 1999 , 54 ( 22 ): 5609 - 5615 .

Ilyas S U , Pendyala R , Marneni N . Dispersion behaviour and agglomeration effects of zinc oxide nanoparticles in ethanol water mixtures [J]. Materials Research Innovations , 2014 , 18 (suppl . 6 : 179 - 183 .

Wang Z , Kwauk M , Li H . Fluidization of fine particles [J]. Chemical Engineering Science , 1998 , 53 ( 3 ): 377 - 395 .

Zheng Z , Li H , Zhu Q , et al . Experimental study and numerical simulation of bubbling fluidized beds with fine particles in two and three dimensions [J]. Industrial & Engineering Chemistry Research , 2013 , 52 ( 33 ): 11302 - 11312 .

Valverde J M , Castellanosa A , Quintanillaa M A S , et al . Effect of inclination on gas-fluidized beds of fine cohesive powders [J]. Powder Technology , 2008 , 182 ( 3 ): 398 - 405 .

郑建祥 , 王京阳 , 许帅 . 聚并器内颗粒聚团数值模拟 [J]. 东北电力大学学报 , 2017 , 37 ( 4 ): 52 - 55 .

Zheng J X , Wang J Y , Xu S . Numerical simulation of particle aggregation in a clusterer [J]. Journal of Northeast Electric Power University , 2017 , 37 ( 4 ): 52 - 55 .

Wang Y , Zou Z , Li H , et al . A new drag model for TFM simulation of gas-solid bubbling fluidized beds with Geldart-B particles [J]. Particuology , 2014 , 15 ( 4 ): 151 - 159 .

刘含笑 , 姚宇平 , 郦建国 . 凝聚器二维单扰流柱流场中颗粒凝并模拟 [J]. 动力工程学报 , 2015 , 35 ( 4 ): 292 - 297 .

Liu H X , Yao Y P , Li J G . Simulation of particle coagulation in two-dimensional single spoiler flow field of condenser [J]. Journal of Power Engineering , 2015 , 35 ( 4 ): 292 - 297 .

刘岑凡 , 张楠 , 王维 . 鼓泡床中基于气泡结构的多相反应模型 [J]. 化工学报 , 2018 , 69 ( 5 ): 2057 - 2062 .

Liu C F , Zhang N , Wang W . Multiphase reaction model based on bubble structure in bubbling beds [J]. CIESC Journal , 2018 , 69 ( 5 ): 2057 - 2062 .

吕小林 . 基于气泡和聚团的结构模型及其应用 [J]. 化工进展 , 2017 , 36 : 72 .

Lü X L . Structural model based on bubbles and agglomeration and its application [J]. Chemical Industry and Engineering Progress , 2017 , 36 : 72 .

宋素芳 , 郝振华 , 董立波 , 等 . bubble-based EMMS/PFB模型的建立及在加压流化床浓相段的应用 [J]. 化工学报 , 2017 , 68 ( 8 ): 46 - 53 .

Song S F , Hao Z H , Dong L B , et al . Establishment of bubble-based EMMS/PFB model and its application in pressurized fluidized bed dense phase section [J]. CIESC Journal , 2017 , 68 ( 8 ): 46 - 53 .

Xu C , Zhu J . Experimental and theoretical study on the agglomeration arising from fluidization of cohesive particles—effects of mechanical vibration [J]. Chemical Engineering Science , 2005 , 60 ( 23 ): 6529 - 6541 .

Tao Z , Li H . Force balance modelling for agglomerating fluidization of cohesive particles [J]. Powder Technology , 2000 , 111 ( 1 ): 60 - 65 .

Wang L , Marchisio D L , Vigil R D , et al . CFD simulation of aggregation and breakage processes in laminar Taylor-Couette flow [J]. Journal of Colloid & Interface Science , 2005 , 282 ( 2 ): 380 - 396 .

Marchisio D L , Vigil R D , Fox R O . Quadrature method of moments for aggregation-breakage processes [J]. J. Colloid Interface Sci ., 2003 , 258 ( 2 ): 322 - 334 .

Pinsky M , Khain A , Shapiro M . Collisions of small drops in a turbulent flow (I): Collision efficiency. Problem formulation and preliminary results [J]. Journal of the Atmospheric Sciences , 1997 , 56 ( 15 ): 2585 - 2600 .

Cameron I T , Wang F Y , Immanuel C D , et al . Process systems modelling and applications in granulation: a review [J]. Chemical Engineering Science , 2005 , 60 ( 14 ): 3723 - 3750 .

Sun J , Battaglia F . Hydrodynamic modeling of particle rotation for segregation in bubbling gas-fluidized beds [J]. Chemical Engineering Science , 2006 , 61 ( 5 ): 1470 - 1479 .

Song S , Lu S , Zhang Y , et al . Aggregation rate of fine particles in turbulent flows [J]. Journal of Dispersion Science and Technology , 2004 , 25 ( 1 ): 8 .

Lu G , Third J R , Müller C R . Effect of wall rougheners on cross-sectional flow characteristics for non-spherical particles in a horizontal rotating cylinder [J]. Particuology , 2014 , 12 ( 1 ): 44 - 53 .

Martín L D , Fabre A , Ommen J R V . The fractal scaling of fluidized nanoparticle agglomerates [J]. Chemical Engineering Science , 2014 , 112 ( 12 ): 79 - 86 .

Nam C H , Pfeffer R , Dave R N , et al . Aerated vibrofluidization of silica nanoparticles [J]. AIChE Journal , 2004 , 50 ( 8 ): 1776 - 1785 .

Valverde J M , Castellanos A . Fluidization of nanoparticles: a modified Richardson‐Zaki Law [J]. AIChE Journal , 2010 , 52 ( 2 ): 838 - 842 .

章鹏飞 , 米建春 , 潘祖明 . 装置元件排列间距和颗粒浓度对细颗粒湍流聚并的影响 [J]. 中国电机工程学报 , 2016 , 36 ( 6 ): 1625 - 1632 .

Zhang P F , Mi J C , Pan Z M . Influences of elemental arrangement and particle concentration on fine particle amalgamation [J]. Proceedings of the CSEE , 2016 , 36 ( 6 ): 1625 - 1632 .

杨岳 . 基于雷诺时均NS方程的船体绕流数值研究 [D]. 大连 : 大连海事大学 , 2016 .

Yang Y . Numerical study of hull flow around the Reynolds time-averaged NS equation [D]. Dalian : Dalian Maritime University , 2016 .

郑建祥 , 王京阳 , 李玉凯 , 等 . 基于修正的颗粒动理学模型超细颗粒聚团流动模拟研究 [J]. 热能动力工程 , 2019 , 34 ( 2 ): 117 - 123 .

Zheng J X , Wang J Y , Li Y K , et al . Simulation of ultrafine particle agglomeration flow based on modified particle kinetic model [J]. Thermal Energy Engineering , 2019 , 34 ( 2 ): 117 - 123 .

Ahuja G N , Patwardhan A W . CFD and experimental studies of solids hold-up distribution and circulation patterns in gas-solid fluidized beds [J]. Chemical Engineering Journal , 2008 , 143 ( 1/2/3 ): 147 - 160 .

Einstein A . Investigation on the Theory of the Brownian Movement [M]. New York : Dover , 1956 .

Park S H , Lee K W , Otto E , et al . The log-normal size distribution theory of Brownian agglomeration for the entire particle size range [J]. Journal of Aerosol Science , 1997 , 28 ( 28 ): S23 - S24 .

Tan H S , Goldschmidt M J V , Boerefijn R , et al . Building population balance model for fluidized bed melt granulation: lessons from kinetic theory of granular flow [J]. Powder Technology , 2004 , 142 ( 2 ): 103 - 109 .

Geng J , Park H , Sajo E . Simulation of aerosol coagulation and deposition under multiple flow regimes with arbitrary computational precision [J]. Aerosol Science & Technology , 2013 , 47 ( 5 ): 530 - 542 .

Goldstein R . Fluid Mechanics Measurements [M]. 2nd Ed . Boca Raton : CRC Press , 1996 : 80 - 96 .

Saffman P G , Turner J S . On the collision of drops in turbulent clouds [J]. Journal of Fluid Mechanics , 1956 , 1 ( 1 ): 16 .

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