| 外加声场对气固流化床A类颗粒动力学影响的数值研究 |
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| 引用本文： | 董淑芹,赵亮亮,郭庆杰,曹长青.外加声场对气固流化床A类颗粒动力学影响的数值研究[J].青岛科技大学学报,2009,30(4):328-332. |
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| 作者姓名： | 董淑芹 赵亮亮 郭庆杰 曹长青 |
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| 作者单位： | 青岛科技大学,化工学院,山东,青岛,266042 |
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| 基金项目： | 国家自然科学基金项目，山东省"泰山学者"建设工程基金项目 |
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| 摘 要： | 在内径0.14 m,高1.6 m的气固流化床中,以空气和FCC颗粒为气相和固相,运用商业模拟软件Fluent 6.2,通过自编C语言程序,将声场模型与Fluent 6.2中的传统模型结合,研究了径向颗粒浓度分布、轴向压力波动均方根(pRMS)和颗粒温度,分析了声场对床内气固流动状态的影响。结果表明:鼓泡床密相区径向颗粒浓度呈抛物线分布,声场的加入增大了轴向颗粒浓度,减小了气泡尺寸;pRMS随声压级的增大而增大,说明气泡形成与破裂频率加快;颗粒温度也随声压级的增大而增大;模拟结果与实验值吻合较好。
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| 关 键 词： | 气固流化床 声场 压力波动均方根 颗粒浓度 颗粒温度 数值模拟 |
Numerical Study on Influence of Sound Assistance on Hydrodynamics of Group A in an Acoustic Fluidized Bed |
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| DONG Shu-qin,ZHAO Liang-liang,GUO Qing-jie,CAO Chang-qing.Numerical Study on Influence of Sound Assistance on Hydrodynamics of Group A in an Acoustic Fluidized Bed[J].Journal of Qingdao University of Science and Technology:Natutral Science Edition,2009,30(4):328-332. |
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| Authors: | DONG Shu-qin ZHAO Liang-liang GUO Qing-jie CAO Chang-qing |
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| Affiliation: | College of Chemical Engineering;Qingdao University of Science and Technology;Qingdao 266042;China |
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| Abstract: | A gas-solid fluidized bed,0.14 m in diameter and 1.6 m in height,was employed to investigate systematically the effects of sound assistance on fluidization behaviors.The radial particle concentration distribution,axial root-mean-square(pRMS) of bed pressure drop and granular temperature with air as gas phase and FCC particles as solid phases were simulated using CFD code Fluent 6.2.The developed model combined the sound assistance with CFD software.The simulation results show that the radial distribution of... |
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| Keywords: | gas-solid fluidized bed sound assistance pRMS of bed pressure drop particle concentration granular temperature numerical simulation |
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