
网格划分是任何 CFD 过程中最重要的部分。网格化是将连续域划分为离散部分(称为控制体积)的过程。离散化后,将此网格提供给数值 (CFD) 求解器,以求解由连续域的偏微分方程产生的代数方程。因此,网格划分是任何 CFD 过程中最重要的部分,CFD 过程的准确性和稳定性在很大程度上取决于良好的网格质量。
据估计,在任何 CFD 项目中,大约 70% 的时间用于网格划分。但学习完本课程后,您将成为网格剖分专家,并且您可以在比 CFD 社区的其他成员更短的时间内生成网格。
在网格划分中,您可以使用全六边形网格或四边形网格(使用棱镜层)。六边形网格划分更像是一门艺术,需要大量时间。但产生最准确的解决方案。它还需要较少数量的节点,因此需要较少的压缩资源和较少的求解时间。它还可以避免在四面体网格中观察到的数值误差/数值扩散率。据估计,四面体网格需要的网格尺寸是六面体网格的五倍。
在本课程中,您将在更复杂的几何形状(例如圆柱体、3D 翼型、搅拌罐、风力涡轮机等)上提高您的 ICEMCFD 六角网格剖分技巧。在这里,您将了解 CFD 网格剖分的每一个技巧/技巧。完成本课程后,您将能够根据 CFD 模拟要求创建完美的网格,从而能够在更短的时间内获得最准确的结果。
我们还将涵盖不同的主题,这将提高六边形网格的有效性。
MP4 | Video: h264, 1280×720 | Audio: AAC, 44.1 KHz
Language: English | Size: 6.77 GB | Duration: 10h 12m
Perfect meshing for CFD
What you’ll learn
- Students will learn about creating high quality hexa meshing for CFD Analysis
Requirements
- Basic knowledge of CFD and ICEMCFD
- ICEMCFD installed on your computer, more preferably ICEMCFD 2020 R2 (ANSYS 2020 R2)
Description
Meshing is the most important part of any CFD process. Meshing is the process to divide continuous domain in discrete parts known as control volumes. After discretizing, this mesh is provided to numerical (CFD) solver to solve algebraic equations arising from partial differential equations of continuous domain. Therefore meshing is most important part of any CFD process and accuracy & stability of CFD process largely depends on good quality mesh.
It is estimated that around 70% time is spent on meshing in any CFD project. But after taking this course, you will be expert in meshing and you can generate meshes in very less time than rest of CFD community.
In meshing you can either go with full hexa meshing or tetra meshing (with prism layers). Hexa meshing is more of an art and requires great deal of time. But yields most accurate solution. It also requires less number of nodes and hence it require less compactional resources and less solution time. It also avoids numerical errors /numerical diffusivity as you can observe in tetra meshes. It is estimated that tetra meshes requires as much as five times of mesh size as that of hexa meshing.
In this course you will enhance your ICEMCFD hexa meshing skills on more complicated geometries such as circular cylinder, 3D airfoils, stirred tank, wind turbine etc. Here you will each and every trick/tip of business of CFD meshing. After going through this course, you will be able to create perfect grid according to CFD simulation requirements and hence will be able to get most accurate results in less time.
We will cover different topics as well which will increase effectiveness of hexa meshing.
Who this course is for
Students and professionals who strive to get best CFD results based on high quality meshing.
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