数据驱动的方法,以粗粒简单的液体在限制的限制
Ishan Nadkarni1, Haiyi Wu2, Narayana R Aluru1,2
1Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.
Journal of chemical theory and computation
|October 4, 2023
概括
我们使用深度神经网络 (DNN) 开发了一个数据驱动的框架,以确定局限空间中的液体的粗粒度 (CG) 列纳德-斯 (LJ) 潜在参数. 这种方法准确地预测了流体的行为,并增强了粗粒技术.
科学领域:
- 计算化学是一种计算化学.
- 材料科学是一种材料科学.
- 统计力学就是统计力学.
背景情况:
- 粗粒度 (CG) 方法简化了大规模模拟的复杂分子系统.
- 精确的CG潜力对于模拟有限环境中的流体至关重要,例如纳米孔状材料.
- 导出CG参数的传统方法可能是计算密集的,并且可能会与系统特定的效应作斗争.
研究的目的:
- 开发一个数据驱动的框架来识别局限系统中的粗粒列纳德-斯 (LJ) 潜在参数.
- 利用深度神经网络 (DNN) 来解决受限流体的逆流体状态问题 (ILST).
- 为了提高液体在狭窄几何形状的粗粒模拟的准确性和效率.
主要方法:
- 经过深度神经网络 (DNN) 的训练,可以对局限系统的逆液态 (ILST) 解决方案进行近似训练.
- 转移学习被用来预测状通道中的多原子液体的单位LJ潜力.
- 数据驱动的方法与使用相对缩 (RE) 最小化的自下而上的粗粒度方法相结合.
主要成果:
- DNN模型准确地预测了局限性流体中的不均质效应.
- 预测的LJ潜力复制了非静电相互作用的全原子 (AA) 系统的流体结构和分子力.
- DNN方法和RE最小化之间的协同作用显著提高了代RE方法的稳定性和融合.
结论:
- 拟议的数据驱动框架有效地识别了限制液体的CG-LJ参数.
- 将DNN与既有粗粒度技术集成为分子模拟提供了一种强大的方法.
- 这种方法提供了一种强大而高效的方法,可以在纳米尺度限制下建模复杂的流体行为.
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