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浙江大学学报(工学版)
浙江大学学报(工学版)  2018, Vol. 52 Issue (3): 473-478    DOI: 10.3785/j.issn.1008-973X.2018.03.008
机械工程与力学     
抗磁性物质的磁悬浮仿真及密度测量
夏能, 颉俊, 张承谦, 赵朋, 傅建中
浙江大学 机械工程学院 浙江省三维打印工艺与装备重点实验室, 浙江 杭州 310027
Magnetic levitation simulation and density measurement for diamagnetic materials
XIA Neng, XIE Jun, ZHANG Cheng-qian, ZHAO Peng, FU Jian-zhong
College of Mechanical Engineering, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
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摘要：

利用COMSOL、Fluent和EDEM软件，仿真预测出不同磁悬浮装置下样品密度与悬浮高度之间的函数关系.在理论分析磁悬浮检测装置与原理的基础上，采用COMSOL软件模拟装置的磁场分布，通过拟合得到中心线上磁场强度表达式，并利用Fluent与EDEM软件耦合预测样品的悬浮高度.通过不同密度、不同磁铁间距的磁悬浮分组实验，验证数值仿真结果的正确性.实验结果表明，当磁铁间距为45 mm时，样品密度与悬浮高度呈线性关系，测量偏差为-0.001 5~0.013 0 g/cm3；当磁铁间距为60 mm时，样品密度与悬浮高度服从多项式函数关系，测量偏差达到-0.006 4~0.013 0 g/cm3.该数值仿真方法使用方便且密度检测精度高.
Abstract:

COMSOL, Fluent and EDEM software were combined to simulate the mathematic relationship between the density and the levitation height of diamagnetic materials under different levitation devices. Based on theoretical analysis of magnetic levitation device and its principle, COMSOL software was adopted to simulate the levitation devices' magnetic field, and the expression of the magnetic flux density on the center line was established by fitting. The materials' levitation height was predicted by the Fluent-EDEM software. Magnetic levitation experiments with various densities materials and different separation distances between two magnets were performed to verify the accuracy of simulation results. The experimental results show that, when the separation distance is 45 mm, there is a linear relationship between density and levitation height, and its density measurement deviation ranges from -0.001 5 g/cm3 to 0.013 0 g/cm3. When the separation distance is 60 mm, the relationship agrees with polynomial function, and the measurement deviation is from -0.006 4 g/cm3 to 0.013 0 g/cm3. The numerical simulation method is very convenient and has high accuracy in density measurement.
收稿日期: 2017-04-18 出版日期: 2018-09-11
CLC:  TQ320  
基金资助:

国家自然科学基金面上资助项目（51475420）；国家自然科学基金重点资助项目（51635006）；中央高校基本科研业务费专项资金资助项目（2017QNA4003）.
通讯作者: 赵朋,男,副教授,博士.orcid.org/0000-0002-3815-1248.     E-mail: pengzhao@zju.edu.cn
作者简介: 夏能(1996-),男,硕士生,从事聚合物成型及微观形态表征与调控研究.orcid.org/0000-0001-6189-3138.E-mail:21625193@zju.edu.cn
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引用本文:

夏能, 颉俊, 张承谦, 赵朋, 傅建中. 抗磁性物质的磁悬浮仿真及密度测量[J]. 浙江大学学报(工学版), 2018, 52(3): 473-478.

XIA Neng, XIE Jun, ZHANG Cheng-qian, ZHAO Peng, FU Jian-zhong. Magnetic levitation simulation and density measurement for diamagnetic materials. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(3): 473-478.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2018.03.008    或    http://www.zjujournals.com/eng/CN/Y2018/V52/I3/473

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