| 水基铁磁流体磁致凝聚行为的三维耗散粒子动力学研究 |
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| 引用本文： | 王士彬,杜林,孙才新,林森,杨勇. 水基铁磁流体磁致凝聚行为的三维耗散粒子动力学研究[J]. 功能材料, 2011, 42(2): 298-301 |
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| 作者姓名： | 王士彬 杜林 孙才新 林森 杨勇 |
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| 作者单位： | 重庆大学输配电装备及系统安全与新技术国家重点实验室;重庆理工大学电子信息与自动化学院;重庆市电力公司江北供电局; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(2009CB724504); 重庆市自然科学重点基金资助项目(2007BA2002); 输配电装备及系统安全与新技术国家重点实验室自主资助项目(2007DA10512708302) |
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| 摘 要： | 用耗散粒子动力学方法对铁磁流体在外加恒定磁场作用下的凝聚行为进行了三维模拟.基于Flory-Huggins相混理论得到包括磁性颗粒珠子间的通常意义上的相互作用参数;利用Ewald方法把单磁畴结构的磁性颗粒长程的磁性相互作用转换成短程加和形式,从而得到磁偶极子的磁性相互作用参数.模拟结果表明,外加磁场强度是形成凝聚结构的...
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| 关 键 词： | 铁磁流体 耗散粒子动力学 恒定磁场 凝聚行为 |
Agglomeration of aqueous ferrofluid subjected to the magnetic field by 3-D dissipative particle dynamics simulation |
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| WANG Shi-bin,DU Lin,SUN Cai-xin,LIN Sen,YANG Yong. Agglomeration of aqueous ferrofluid subjected to the magnetic field by 3-D dissipative particle dynamics simulation[J]. Journal of Functional Materials, 2011, 42(2): 298-301 |
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| Authors: | WANG Shi-bin DU Lin SUN Cai-xin LIN Sen YANG Yong |
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| Affiliation: | WANG Shi-bin1,2,DU Lin1,SUN Cai-xin1,LIN Sen3,YANG Yong1(1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing 400044,China,2.School of Electronic Information and Automation,Chongqing University of Technology,Chongqing 400050,3.Jiangbei Power Supply Bureau,Chongqing Electric Power Company,Chongqing 401147,China) |
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| Abstract: | Based on the coarse graining model of ferrofluid,dissipative particle dynamics simulations are performed in three-dimensional space to investigate the morphological characters and the distribution of agglomeration.Interaction parameters of components in ferrofluid are calculated by Flory-Huggins solution theory.The long-range interactions of magnetic nanoparticles are solved by ewald summation method.The simulation results show that no ordering microstructure is observed in ferrofluid when there is no magne... |
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| Keywords: | ferrofluid dissipative particle dynamics the steady magnetic field agglomeration |
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