期刊文献+

正则系综的变电荷分子动力学方法

Variable Charge Molecular Dynamics Method in Canonical Ensemble
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摘要 在迭代变电荷方法的基础上加以改进得到适于正则系综的变电荷方法.利用正则系综的热浴方法补偿模拟过程中动能的衰减.分子动力学模拟的结果表明,改进的变电荷方法能够避免能量漂移问题,在相同的电荷精度条件下,所需的迭代次数减少,可提高计算效率. A modified variable charge method based on iterative fluctuation charge model is proposed which is suitable for molecular dynamics simulation of a canonical ensemble.It compensates kinetic energy loss in simulation with thermal bath in the canonical ensemble.Molecular dynamics simulations show that this method has no energy leaking.Number of iteration in the modified method is reduced and the computational efficiency is increased.
出处 《计算物理》 EI CSCD 北大核心 2010年第3期446-450,共5页 Chinese Journal of Computational Physics
基金 国家自然科学基金(批准号:10702059) 教育部博士点新教师基金(批准号:20070530009) 教育部留学回国人员科研启动基金(批准号:2008890) 湘潭大学材料科学与工程博士后流动站资助项目
关键词 分子动力学 变电荷方法 正则系综 molecular-dynamics (MD) variable charge method canonical ensemble
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