.png){kind=icon}
返回
Accelerating Polyhedral Discrete Element Method with CUDA
.png){kind=icon}
OA
AI
DOI：10.3847/1538-3881/acfc46.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
This paper presents an efficient CUDA-based implementation of a nonspherical discrete element method where irregular particles are described by using polyhedrons. Two strategies are employed to exploit the parallelism of the numerical method. One is to perform contact detection based on the contact pair level instead of the traditional particle level. The second is to reduce the computational burden of each kernel function by allocating thread blocks reasonably. Contact detection between potential contact pairs is the most complicated, time-consuming, and essential process for the polyhedral discrete element method. The linear bounding volume hierarchies are introduced to fix this issue. The hierarchies of the bounding volume tree are organized in a spatially coherent way. Such a structure can minimize branch divergence and is very suitable for parallel implementation with GPU. Two numerical examples are presented to show the performance of the code. It is found from the scenario of two sphere collision that improving the mesh resolution of polyhedral particles can reduce the computational error while slowing down the computational speed correspondingly. A trade-off must be made between accuracy and efficiency. The other example of self-gravitating aggregation demonstrates the code is convergent, stable, and highly efficient. Particularly, with a mainstream GPU, the proposed method easily performs hundreds of times faster than the serial CPU code that does the same function.
Keyword:
GRAVITATIONAL REACCUMULATION
CONTACT DYNAMICS
EVOLUTION
IMPLEMENTATION
SIMULATIONS
CODE
期刊
IF:
5.1
论文数:
1.4W
被引数:
5.0W
机构
引用论文
分享收藏分享收藏LOQUAT: an open-source GPU-accelerated SPH solver for geotechnical modeling.png)
ACTA GEOTECHNICA
ACTA GEOTECHNICAIF5.7
PREAI
分享收藏SIMULATING ASTEROID RUBBLE PILES WITH A SELF-GRAVITATING SOFT-SPHERE DISTINCT ELEMENT METHOD MODEL用自重软球离散单元法模型模拟小行星碎石桩
OAAI
OAAI分享收藏
查看更多内容