.png){kind=icon}
返回
Level-set based pre-processing techniques for particle methods
.png){kind=icon}
OA
AI
DOI：10.1016/j.cpc.2023.108744.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Obtaining high-quality particle distribution representing clean geometry in pre-processing is essential for accurate and stable simulation with particle methods. In this paper, several level-set-based techniques for cleaning up 'dirty' geometry automatically and generating isotropic particle distribution are presented. First, under a given resolution, an identification method for non-resolved structures based on a level -set field is employed to detect the tiny fragments which dirty the geometry. Second, a re-distance algorithm is proposed to remove these fragments and reconstruct clean, smooth geometries. Third, a 'static confinement' boundary condition is developed for particle relaxation. By complementing the kernel support for the near-surface particles, the boundary condition achieves improved body-fitted particle distribution near the highly-curved or narrow region. Several numerical examples are given to demonstrate the efficient cleanup capabilities of the present method as well as the improvement of body-fitted particle distribution for complex geometries. In addition, numerical simulations have been carried out for the fluid-structure interaction (FSI) of an elastic airfoil NACA6412 at various resolutions to show that, when the unresolved structures affect or even fail the simulation, the cleaned geometry and improved particle distribution help to stabilize and smooth the simulations.(c) 2023 Published by Elsevier B.V.
Keyword:
Particle methods
'Dirty' geometry cleaning
Level-set
Static confinement
Kernel support completing
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3.4
论文数:
1.2W
被引数:
3.7W
机构
引用论文
An isotropic unstructured mesh generation method based on a fluid relaxation analogy基于流体松弛类比的各向同性非结构网格生成方法
.png){kind=icon}
PREAI
分享收藏An arbitrary boundary with ghost particles incorporated in coupled FEM-SPH model for FSI problemsFSI问题的耦合fe-sph模型中包含鬼粒子的任意边界
PREAI
分享收藏Efficient formulation of scale separation for multi-scale modeling of interfacial flows用于界面流多尺度建模的尺度分离的有效公式
PREAI
分享收藏Smoothed particle hydrodynamics (SPH) for modeling fluid-structure interactions用于模拟流体-结构相互作用的光滑粒子流体动力学 (SPH)
PREAI
分享收藏An Eulerian-Lagrangian incompressible SPH formulation (ELI-SPH) connected with a sharp interface与尖锐界面连接的欧拉-拉格朗日不可压缩SPH公式 (eli-sph)OAAI
OAAI分享收藏分享收藏分享收藏
查看更多内容