CFD-DEM模型并行化及其在流化床气固流动中的应用

doi:10.11949/j.issn.0438-1157.20160026

化工学报 ›› 2016, Vol. 67 ›› Issue (7): 2748-2755.DOI: 10.11949/j.issn.0438-1157.20160026

CFD-DEM模型并行化及其在流化床气固流动中的应用

杨春振¹, 陈成敏¹, 刘光霞¹, 段钰锋²

1. 山东省科学院能源研究所, 山东济南 250014;
2. 东南大学能源与环境学院能源热转换及其过程测控教育部重点实验室, 江苏南京 210096

收稿日期:2016-01-07 修回日期:2016-03-14 出版日期:2016-07-05 发布日期:2016-07-05
通讯作者: 陈成敏
基金资助:
山东省自主创新及成果转化专项（2014ZZCX04215）；山东省科学院青年基金项目（2014QN016，2013QN016）。

Parallel algorithm of CFD-DEM model and applications on gas-solids flow in fluidized beds

YANG Chunzhen¹, CHEN Chengmin¹, LIU Guangxia¹, DUAN Yufeng²

1. Energy Research Institute of Shandong Academy of Sciences, Jinan 250014, Shandong, China;
2. Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China

Received:2016-01-07 Revised:2016-03-14 Online:2016-07-05 Published:2016-07-05
Supported by:
supported by the Project of Independent Innovation and Achievement Transformation of Shandong Province (2014ZZCX04215) and the Youth Fund of Shandong Academy of Sciences (2014QN016, 2013QN016).

摘要/Abstract

摘要：

提出广义区域覆盖法用于定位计算节点区域，利用Fluent软件的UDFs实现颗粒信息在计算节点间高效、准确地传递，建立了适用于非正交网格的CFD-DEM模型并行求解方法，在探讨并行模型计算效率的基础上对埋管流化床和单孔射流流化床内的气泡行为及双支腿流化床半床间的颗粒交换行为进行了数值模拟研究并对比实验结果。结果表明：CFD-DEM模型并行求解方法能够快速传递及收集计算节点内的颗粒信息；广义区域覆盖法降低了颗粒在计算节点内的定位时间，提高了模型的并行计算效率；能够捕获与Rong等一致的埋管周围气泡行为（其频率约为3 Hz），获得了与Bokkers等结果接近的单孔射流气泡尺寸及颗粒速度矢量分布，双支腿流化床半床间颗粒交换行为与实验结果一致，第一主频约为1 Hz，第二主频大于2 Hz。

关键词: 并行, DEM模型, 两相流, 流化床, 数值模拟

Abstract:

General domain coverage method (GDCM) was proposed to determine the region for each computing node efficiently by comparing all cell nodes, where these regions were helpful for Host to identify which computing node solid particle belongs to. Particle information was passed among host and nodes with the help of Fluent UDFs. The parallel algorithm for CFD-DEM model was developed successfully to simulate gas-solids flows in the fluidized beds (FBs) which were meshed in arbitrary shapes. Based on the comparison of calculation efficiency between parallel algorithm and serial algorithm, the bubble behaviors were studied in a FB with an immersed tube in a single jet FB, and the solids exchange behaviors between two half beds were simulated and compared with experimental results in a dual leg FB. The simulation results showed that the particle information was passed between host and nodes efficiently by parallel algorithm. It was efficient for GDCM to determine which computing node particles are in. The simulated bubbling frequency (about 3 Hz) was similar as Rong's simulation result. Compared with Bokkers' simulated and experimental jetting bubble size, the more similar bubble size and solid velocity vectors around the bubble were obtained by the parallel algorithm. The solid exchange between two half beds in both forms of the first (~1 Hz) and second (>2 Hz) domain frequency was simulated, which was similar as the experimental result.

Key words: parallel, DEM model, two-phase flow, fluidized bed, numerical simulation

中图分类号:

杨春振, 陈成敏, 刘光霞, 段钰锋. CFD-DEM模型并行化及其在流化床气固流动中的应用[J]. 化工学报, 2016, 67(7): 2748-2755.

YANG Chunzhen, CHEN Chengmin, LIU Guangxia, DUAN Yufeng. Parallel algorithm of CFD-DEM model and applications on gas-solids flow in fluidized beds[J]. CIESC Journal, 2016, 67(7): 2748-2755.

参考文献 20

[1]	彭丽, 吴迎亚, 李佳瑶, 等. 基于DEM模拟气固鼓泡床中颗粒碰撞参数对流场间歇性的影响[J]. 化工学报, 2015, 66(6): 2041-2048. PENG L, WU Y Y, LI J Y, et al. Effect of granular collision parameters on DEM simulation of flow field intermittency in gas-solids bubbling fluidized bed [J]. CIESC Journal, 2015, 66(6): 2041-2048.
[2]	王猛, 朱卫兵, 孙巧群, 等. 提升管内气固流动特性的离散元模拟[J]. 化工学报, 2013, 64(7): 2436-2445. WANG M, ZHU W B, SUN Q Q, et al.. Discrete element simulation of gas-solids flow behavior in riser[J]. CIESC Journal, 2013, 64(7): 2436-2445.
[3]	周池楼, 赵永志. 离散单元法及其在流态化领域的应用[J]. 化工学报, 2014, 65(7): 2520-2534. ZHOU C L, ZHAO Y Z. Discrete element method and its applications in fluidization[J]. CIESC Journal, 2014, 65(7): 2520-2534.
[4]	卜昌盛, 陈晓平, 刘道银, 等. 基于颗粒尺度的离散颗粒传热模型[J]. 化工学报, 2012, 63(3): 698-704. BU C S, CHEN X P, LIU D Y, et al. Heat transfer model for particles with dicrete element method[J]. CIESC Journal, 2012, 63(3): 698-704.
[5]	吴迎亚, 蓝兴英, 高金森. 基于DEM模拟的气固鼓泡床内流场间歇性及颗粒相干结构的分析[J]. 化工学报, 2014, 65(7): 2724-2732. WU Y Y, LAN X Y, GAO J S. Analysis of flow field intermittency and coherent structure of particles based on DEM simulation of gas-solids bubbling bed[J]. CIESC Journal, 2014, 65(7): 2724-2732.
[6]	WU C L, BERROUK A S, NABDAJYMAR K. Three-dimensional discrete particle model for gas-solid fluidized beds on unstructured mesh[J]. Chemical Engineering Journal, 2009, 152(2/3): 514-529.
[7]	WU C L, ZHAN J M, LI Y S, et al. Accurate void fraction calculation for three-dimensional discrete particle model on unstructured mesh[J]. Chemical Engineering Science, 2009, 64(6): 1260-1266.
[8]	ZHAO Y Z, JIANG M Q, CHENG Y. Particle-scale simulation of the flow and heat transfer behaviors in fluidized bed with immersed tube[J]. Frontiers of Chemical Engineering in China, 2008, 2(3): 341-345.
[9]	赵永志, 程易. 沉浸管式流化床的颗粒尺度模拟[J]. 化学工程, 2007, 35(11): 21-24. ZHAO Y Z, CHENG Y. Particle-scale simulation of fluidized bed with immersed tubes[J]. Chemical Engineering (China), 2007, 35(11): 21-24.
[10]	SU J W, GU Z L, XU X Y. Discrete element simulation of particle flow in arbitrarily complex geometries[J]. Chemical Engineering Science, 2011, 66(23): 6069-6088.
[11]	杨旭. 微型流化床的数值模拟及混合特性研究[D]. 长春: 吉林大学, 2014. YANG X. Numerical simulation on the mixing characteristics in micro fluidized bed[D]. Changchun: Jilin University, 2014.
[12]	杨春振, 段钰锋, 孙荣峰, 等. 埋管流化床颗粒流动行为的数值模拟[J]. 化工学报, 2013, 64(8): 2788-2793. YANG C Z, DUAN Y F, SUN R F, et al. Numerical study of solid behavior in a fluidized bed with multi-immersed tubes[J]. CIESC Journal, 2013, 64(8): 2788-2793.
[13]	YANG C Z, DUAN Y F. CFD-DEM model for simulating solid exchange in a dual-leg fluidized bed[J]. Chemical Engineering & Technology, 2013, 36(11): 1907-1914.
[14]	TSUJI T, YABUMOTO K, TANAKA T. Spontaneous structures in three-dimensional bubbling gas-fluidized bed by parallel DEM-CFD coupling simulation[J]. Powder Technology, 2008, 184(2): 132-140.
[15]	XU M, CHEN F G, LIU X H, et al. Discrete particle simulation of gas-solid two-phase flows with multi-scale CPU-GPU hybrid computation[J]. Chemical Engineering Journal, 2012, 207/208: 746-757.
[16]	任立波, 韩吉田. 基于CFD-DEM耦合并行算法的锥形喷动床内离散颗粒数值模拟[J]. 东南大学学报(自然科学版), 2014, 44(5): 993-998. REN L B, HAN J T. Numerical simulation of discrete particles in conical-base spouted bed based on parallel coupled CFD-DEM model[J]. Journal of Southeast University (Natural Science Edition), 2014, 44(5): 993-998.
[17]	WU C L, AYENI O, BERROUK A S, et al. Parallel algorithms for CFD-DEM modeling of dense particulate flows[J]. Chemical Engineering Science, 2014, 118: 221-244.
[18]	RONG D G, TAKAFUMI M, MASAYUKI H. Particle and bubble movements around tubes immersed in fluidized beds - a numerical study[J]. Chemical Engineering Science, 1999, 54(23): 5737-5754.
[19]	BOKKERS G A, VAN SINT ANNALAND M, KUIPERS J A M. Mixing and segregation in a bidisperse gas-solid fluidised bed: a numerical and experimental study[J]. Powder Technology, 2004, 140(3): 176-186.
[20]	YANG C Z, DUAN Y F, HU H T, et al. Pressure fluctuation analysis of solid exchange in a dual-leg fluidized bed[J]. Powder Technology, 2012, 224(224): 69-75.

CFD-DEM模型并行化及其在流化床气固流动中的应用

Parallel algorithm of CFD-DEM model and applications on gas-solids flow in fluidized beds

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