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稠密气固两相QL-EMMS曳力模型及改进 被引量：10

QL-EMMS DRAG MODEL & ITS REVISION FOR FLUIDIZED DENSE GAS-SOLID TWO-PHASE FLOW
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摘要 通过引入颗粒加速度,改进现有EMMS曳力模型中的颗粒受力平衡关系,耦合流动的整体参数、局部参数与曳力,提出了基于流态化多尺度最小能量原理的QL-EMMS曳力模型。实验检验表明,模型精度高,普适性好。进一步采用O-S经验曳力模型的单峰函数,修正了颗粒团直径公式,改进后的QL-EMMSn模型更加合理地体现了非均匀曳力变化的主要特征。 A drag model QL-EMMS based on the Energy Minimization Multi-Scale Method was developed,in which the local particle force balance in present EMMS models was revised by introducing particle acceleration.It has been verified by experiments that the model was highly accurate and available for many cases.Furthermore,the cluster diameter formula was revised by coupling existent O-S empirical drag model.The new version of drag model QL-EMMSn showed a better agreement with measurements.
作者 李飞 陈程 王锦生 祁海鹰
机构地区 清华大学热科学与动力工程教育部重点实验室
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2011年第1期75-79,共5页 Journal of Engineering Thermophysics
基金 国家重点基础研究规划(973)项目(No.2006CB2003)
关键词 非均匀气固两相流动 QL-EMMS曳力模型 多尺度最小能量原理 O-S曳力模型 inhomogeneous gas-solid two phase flow QL-EMMS drag model EMMS method O-S empirical drag model
分类号 TK124 [动力工程及工程热物理—工程热物理]
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参考文献12

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二级参考文献7

  • 1Jun-Sik Kim, Ryo Tachino, Atsushi Tsutsumi. Effects of Solids Feeder and Riser Exit Configuration on Establishing High Density Circulating Fluidized Beds. Power Technology, Article in Press, 2008, PTEC-07110
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工程热物理学报
2011年 第1期

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