摘要
针对垂直螺旋输送机中的气固两相流进行了研究,分析了颗粒圆周速度在径向方向上的分布函数,并从颗粒流的螺旋升角、涡量入手,结合理论分析与EDEM+FLUENT仿真分析,研究垂直螺旋输送机中形成TCP流稳定螺旋涡的最佳填充率、最佳螺旋转速和临界雷诺数,推导出不同摩擦因数下的临界雷诺数公式和最佳输送量公式,从而得出一种高效的基于TCP流稳定螺旋涡的垂直螺旋输送机的设计方法,该方法使垂直输送机输送量提高了约20%.
In this paper,the gas-solid two-phase flow was studied for the vertical screw conveyor including the analyse of distribution function of the particles circumferential velocity in the radial direction,the decision of the best fill rate,the best screw speed and the critical Reynolds number when TCP-SHV formed in the vertical screw conveyor.Starting with the helix angle and vorticity of the particle flow,the method was carried out based on theoretical analysis and EDEM ＋FLUENT simulation analysis.Finally,the formula was deduced for the critical Reynolds number and the best throughput under different friction coefficient.Results show that,the method for TCP-SHV solving is efficient and the conveying capacity can be increased by about 20%.
作者
孙晓霞
孟文俊
梁志坚
袁媛
SUN Xiao-xia;MENG Wen-jun;LIANG Zhi-jian;YUAN yuan(Mechanical Engineering College, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, Chin)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2017年第11期1114-1121,共8页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(51575370)
山西省国际科技合作资助项目(2015081008)
山西省高等学校科技创新资助项目(2017160)
晋城市科技计划资助项目(201501004-7)
