摘要
气固两相颗粒喷射技术应用广泛,故对其影响因素的研究具有重要的工程意义。首先利用正交实验设计原理对压强与质量2个因素进行安排实验;然后基于CFD-DEM模型利用FLUENT进行数值模拟,将计算的结果进行极差分析和方差分析;最后设计一套喷射实验,拍摄颗粒喷射轨迹,并将拍摄图片进行颜色直方图处理。得出以下结论:通过极差分析和方差分析得出压强的影响大于质量,且当压强为0.3 MPa、质量为2 g时,其均值最小;当压强取值为0.3 MPa、质量取值为2 g时,其喷射效果达到最优化,且拍摄的效果最佳,与数值模拟的结果一致。
Since the gas-solid two-phase particle injection technology is widely used,it is of great engineering significance to study its influencing factors.Firstly,to inverstigate two factors,pre-ssure and mass,experiments are arranged by the orthogonal experimental design principle.Then,based on the CFD-DEM(Computational Fluid Dynamics/Discrete Element Method)model,the FLUENT software is used for numerical simulation,and the results are analyzed by range analysis and variance analysis.Finally,a set of jet experiments is designed to obtain the particle injection trajectory,and the photographs are processed by color histogram.The following conclusions are drawn:the influence of pressure is greater than that of mass by range analysis and variance analysis,and the mean value is the smallest when the pressure is 0.3 MPa and the mass is 2 g.When the pressure is 0.3 MPa and the mass is 2 g,the injection effect is optimized,and the shooting effect is the best,which is consistent with the results of numerical simulation.
作者
宋鑫华
刘振锋
李晓杰
闫鸿浩
SONG Xinhua;LIU Zhenfeng;LI Xiaojie;YAN Honghao(State Key Laboratory of structural analysis for industrial equipment,Dalian University of Technology,Dalian Liaoning 116024,China)
出处
《实验流体力学》
EI
CAS
CSCD
北大核心
2020年第5期57-64,共8页
Journal of Experiments in Fluid Mechanics
基金
国家自然科学基金(11672068,11672067)。
