规则化的波动格子 博尔兹曼模型
M Lauricella1, A Montessori2, A Tiribocchi1,3
1Istituto per le Applicazioni del Calcolo CNR, via dei Taurini 19, 00185 Rome, Italy.
The Journal of chemical physics
|October 22, 2025
概括
我们为D3Q27格子开发了一种新的调节波动格子博尔兹曼模型 (Reg-FLBM). 该模型准确地捕捉热波动,并改善了中等尺度和纳米尺度流体系统的模拟稳定性.
科学领域:
- 计算流体动力学的流体动力学.
- 统计力学 统计力学
- 介面尺度和纳米尺度物理学
背景情况:
- 格子博尔茨曼方法对于模拟流体动力学至关重要.
- 纳入热波动对于中尺度和纳米尺度现象至关重要.
- 现有的模型经常在热力学一致性和稳定性方面扎.
研究的目的:
- 为D3Q27格子引入一种新的调节波动格子博尔兹曼模型 (Reg-FLBM).
- 通过坚持波动-分散定理来确保热力学的一致性.
- 为了提高模拟热波动的稳定性和准确性.
主要方法:
- 利用基于Hermite的预测来结合热波动.
- 采用了一个递归规范化框架来实现热力学一致性.
- 在GPU加速架构上进行大规模并行模拟的优化实现.
主要成果:
- 与传统的BGK-FLBM相比,Reg-FLBM的稳定性得到了改善.
- 实现了热波动和热力学一致性的准确描述.
- 实现了对中等尺度和纳米尺度流体系统的高效大规模模拟.
结论:
- Reg-FLBM为模拟波动驱动现象提供了一种强大而准确的方法.
- 该模型的GPU优化为微流体和纳米流体的系统性研究提供了便利.
- 这一进步是了解小规模复杂流体行为的关键.
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