在非结构化网格上模拟碰撞的粒子载荷流的最佳方案
Grant Rydquist1, Mahdi Esmaily1
1Department of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14850, United States.
Journal of computational physics
|April 10, 2024
概括
本研究提出了一个最佳的搜索框策略,以降低跟踪拉格朗粒子的计算成本. 该方法在大规模模拟中显著降低了粒子定位和碰撞检测的费用.
科学领域:
- 计算物理学的计算物理.
- 科学计算是科学计算.
- 数字分析 数字分析
背景情况:
- 在非结构化的网格上追踪拉格朗的粒子在计算上是昂贵的.
- 粒子定位和二进制碰撞检测主导着仿真成本.
研究的目的:
- 为有效的粒子跟踪引入最佳的搜索框策略.
- 为了降低粒子定位和碰撞检测的计算成本.
主要方法:
- 开发了一个先验估计最佳的搜索框数量.
- 该策略是通用的,需要最小的调整.
- 对于碰撞检测的近似最佳搜索框作为粒子的数量.
主要成果:
- 在粒子定位和碰撞检测方面实现了显著的成本降低.
- 确保了碰撞检测成本与粒子计数的近线性缩放.
- 在三种不同的几何形状中证明了方法的最佳性.
结论:
- 最佳搜索框策略为大规模粒子模拟提供了可扩展和高效的解决方案.
- 这种方法在复杂的模拟中大大降低了计算开销.
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