使用 3DRISM 模型与多重网格法快速计算溶液的热力学与结构参数
统计力学
2012-05-01 v2
摘要
本文提出一种求解三维参考相互作用位点模型(3DRISM)积分方程的新方法。该算法采用多重网格技术,可降低计算开销。在不同网格上对四种化合物(氩、水、甲烷、甲醇)的水溶液进行 3DRISM 计算,以确定计算误差对网格参数的依赖关系。结果表明,在步长 0.05 Å、缓冲 8 Å 的网格上进行计算,溶剂化自由能的计算误差小于 0.3 kcal/mol,与实验测量精度相当。对该算法的性能进行了测试,结果表明所提算法平均比标准 Picard 直接迭代法快 12 倍以上。
引用
@article{arxiv.1111.2033,
title = {Fast calculation of thermodynamic and structural parameters of solutions using the 3DRISM model and the multi-grid method},
author = {Volodymyr P. Sergiievskyi},
journal= {arXiv preprint arXiv:1111.2033},
year = {2012}
}
备注
the information in this preprint is not up to date. Since the first publication of the preprint (9 Nov 2011) the algorithm was modified which allowed to achieve better results. For the new algorithm see the JCTC paper: DOI: 10.1021/ct200815v, http://pubs.acs.org/doi/abs/10.1021/ct200815v