化NaF-BeF2-ZrF4的温度可扩展深潜模型:预测运输特性和局部结构
Yuanyuan Jiang1,2, Yuanyuan Wang1, Xuejiao Li1
1State Key Laboratory of Thorium Energy, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
The journal of physical chemistry. B
|July 15, 2025
概括
深潜分子动态模拟揭示了化-化-化-化 (NaF-BeF2-ZrF4) 盐的运输特性和局部结构. 这种方法可以降低盐反应堆燃料盐开发的计算成本.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学的计算化学
- 核工程 核工程是指核工程.
背景情况:
- 化NaF-BeF2-ZrF4 (FNaBeZr) 是化盐反应堆中核燃料载体盐的关键候选物.
- 精确模拟其性能对于反应堆设计和安全至关重要.
研究的目的:
- 使用深潜分子动力学 (DPMD) 系统地研究化FNaBeZr的运输特性和局部结构.
- 建立结构特征和温度依赖的运输特性之间的相关性.
- 为了证明DPMD方法在盐系统中的计算效率和可扩展性.
主要方法:
- 深潜分子动力学 (DPMD) 模拟集成第一原则计算,机器学习和分子动力学.
- 在广泛的温度范围内进行系统的调查 (773973 K及以上).
- 分析密度,离子自我扩散系数,对/集群结构,离子导电性和剪切粘度.
主要成果:
- DPMD准确地复制已知属性,并在扩展温度下成功预测其他属性.
- 在结构特征 (协调数,峰值位置) 和温度之间建立了可量化的相关性.
- 与传统方法相比,显著降低了计算成本,提高了系统可扩展性.
结论:
- DPMD框架为模拟化盐提供了一个计算效率高且可扩展的方法.
- 结果为盐反应堆的设计和优化提供了关键的技术参数和工程数据.
- 深度潜力模型显示了化FNaBeZr的温度扩展性,使未来的模拟成为可能.
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