| 梯度磁场下磁流体三维结构的格子-Boltzmann方法模拟 |
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| 引用本文： | 李强,宣益民,张乐莹.梯度磁场下磁流体三维结构的格子-Boltzmann方法模拟[J].工程热物理学报,2007,28(2):316-318. |
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| 作者姓名： | 李强 宣益民 张乐莹 |
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| 作者单位： | 南京理工大学动力工程学院,江苏,南京,210094 |
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| 摘 要： | 考虑磁性颗粒受到的各种内力与外力包括重力、布朗力、van der、Waaks力、磁偶极-偶极作用力以及外磁场作用力,建立了描述磁流体结构的两相格子-Boltzmann三维模型,对外加梯度磁场条件下磁流体的介观结构进行了模拟.模拟结果表明:外加梯度磁场时磁流体粒子沿梯度方向聚集并出现分层现象,且随时间推移和外加磁场增大,分层现象越来越明显.
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| 关 键 词： | 磁流体 格子-Boltzmann 三维 梯度磁场 |
| 文章编号： | 0253-231X(2007)02-0316-03 |
| 修稿时间： | 2006年12月13 |
SIMULATION OF THREE-DIMENSION STRUCTURE OF MAGNETIC FLUID IN THE PRESENCE OF A MAGNETIC FIELD GRADIENT BY THE LATTICE BOLTZMANN MODEL |
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| LI Qiang,XUAN Yi-Min,ZHANG Le-Ying.SIMULATION OF THREE-DIMENSION STRUCTURE OF MAGNETIC FLUID IN THE PRESENCE OF A MAGNETIC FIELD GRADIENT BY THE LATTICE BOLTZMANN MODEL[J].Journal of Engineering Thermophysics,2007,28(2):316-318. |
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| Authors: | LI Qiang XUAN Yi-Min ZHANG Le-Ying |
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| Abstract: | By accounting for the external and internal forces acting on the suspended magnetic particles including gravitational force,Brownian force,van der Waals attraction force,dipole-dipole interaction force,and magnetic volume force,a three-dimension lattice Boltzmann model is proposed for simulating the mesoscaled structure of magnetic fluids with the presence of a magnetic field gradient. The distribution of suspended magnetic nanoparticles and morphology of the ferrofluid are simulated in the different external magnetic field gradient.The effect of the Kelvin force on the structures of the magnetic fluid is discussed. |
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| Keywords: | magnetic fluid lattice Boltzmann three dimension magnetic field gradient |
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