网格单元的形状 是影响CFD计算结果精度的一个关键因素。 网格单元应尽量保持规则，避免过度拉伸、扭曲和畸变，尤其在流场中的高梯度区域，如边界层、涡流和激波等地方，网格形状直接影响数值解的稳定性和准确性。

CFD模拟中，关于网格或者区域，文献中经常提到的四个词汇：grid,mesh,column,domain. 它们具体指什么？ grid 和 mesh 一般不加区分地使用，指网格，除非文献有特别说明的其它含义，或者约定俗称的提法。 比如multigrid不叫multimesh，mesh sequence不叫grid sequence。 column没遇到过在CFD领域又什么特殊含义。 domain就是域，没什么特别的。 区域，你所关心的某个空间或时间范围，求解域。 有时候你可以把它理解为网格的一个集合。 你一定没有用结构网格，否 …

A high quality body-fitting curvilinear grid is built independently for each geometric component and embedded within a coarser Cartesian grid. Because each curvilinear grid is paired with a component from the geometry, overset grids can be used to track relative motion with computational efficiency, but domain connectivity must be performed so ...

Multigrid methods are classified into two branches. In the Geometric Multigrid, agglomeration of the nodes (cells, elements, or control volumes) takes place on the geometric level, and a set of new data structures representing the coarse grids need to be constructed for each level.

Gridding is the process of subdividing a region to be modeled into a set of small control volumes. Associated with each control volume are one or more values of the dependent flow variables …

A well-executed grid independence study enhances the credibility of CFD analyses by minimizing numerical errors while avoiding excessive computational costs. This approach is essential for applications ranging from aerodynamics and heat transfer to …

Grid generation in CFD refers to a set of techniques for defining a numerical mesh throughout the system to be simulated. The grid that is selected for CFD simulations will define the accuracy and resolution of the simulation results, both of which will affect the computation time and level of detail in the results.

grid means converting the computational domain to smaller subdomains to solve momentum, turbulence, and energy equations and finally obtain results for all levels of the simulated …

Grid generation or meshing is a very critical part within the CFD simulation process as it not only dictates the simulation time but also the accuracy of results of the study. Generating a very coarse and poor quality mesh/ grid often leads to non-physical or highly inaccurate simulation results though may be solved on a very powerful solver.

2021年8月15日 · Handbook of Grid Generation addresses the use of grids (meshes) in the numerical solutions of partial differential equations by finite elements, finite volume, finite differences, and boundary elements. Four parts divide the chapters: structured grids, unstructured girds, surface definition, and adaption/quality.