在地质材料中的漏计算方法基于新的改进的DEM-FDM
Xuan Tang1,2,3, Chong Shi4,5,6, Chengfu Hu1,2
1Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, 210024, China.
Scientific reports
|April 12, 2025
概括
本研究引入了一个新的数值模拟算法,用于地质技术漏,结合有限差异方法 (FDM) 和离散元素方法 (DEM). 该方法准确模拟土壤损害和漏过程,增强对地质技术材料行为的理解.
科学领域:
- 地质技术工程 地质技术工程
- 计算力学 计算力学 计算力学
- 流体动力学 流体动力学
背景情况:
- 漏对地质技术材料的机械行为和损坏模式产生重大影响.
- 了解漏和土壤力学之间的复杂相互作用对于基础设施稳定至关重要.
- 现有的数值方法在准确高效地模拟合的漏-地质技术过程时可能面临挑战.
研究的目的:
- 开发和验证一个新的液压合数值模拟算法,用于地质技术漏.
- 调查控制地质技术材料和漏之间的相互作用的内在机制.
- 为了增强模拟土壤损害现象,如喷涌土壤,在液压条件下.
主要方法:
- 一种混合数值算法,结合了插值有限差异方法 (FDM) 和离散元素方法 (DEM).
- 在单个粒子周围构建一个不规则的流体计算网格,以便进行详细分析.
- 导出二维不稳定的透控制方程及其稳定性条件,使用插值和FDM.
- 通过不同的差异格式参数对漏计算效率进行数值调查.
主要成果:
- 改进的FDM有效地模拟了高计算效率的二维土壤透.
- 漏计算效率与液压导电性和时间步骤正相关,与空间步骤负相关.
- 拟议的方法准确地捕捉了在液压驱动下喷土壤损害的产生和进展.
- 该算法在模拟复杂的地质技术漏场景时表现出强大的性能.
结论:
- 开发的FDM-DEM算法提供了一个高效和准确的工具来模拟地质技术漏和相关损害.
- 这些发现为研究地质技术漏场及其故障机制提供了坚实的理论基础.
- 这项研究有助于改善地质工程项目的预测能力,这些项目涉及流体流动和土壤不稳定性.
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