ICEM 基础教程

第一章介绍

ICEM CFD 工程

Tutorials目录中每个工程是一个次级子目录。每个工程的目录下有下列子目录：import, parts, domains, mesh, 和transfer。他们分别代表：

• import/: 要导入到ICEMCFD中的集合模型交换文件，比如igs，STL等；

• parts/: CAD模型

• domains/: 非结构六面体网格文件(hex.unstruct), 结构六面体网格分区文件(domain.n), 非结构四面体网格文件(cut_domain.1)

• mesh/: 边界条件文件(family_boco, boco)，结构网格的拓扑定义文件(family_topo, topo_mulcad_out), 和Tetin几何文件(tetin1).

• transfer/: 求解器输入文件(star.elem), 用于Mom3d.的分析数据

mesh目录中Tetin文件代表将要划分网格的几何体。包含B-spline曲面定义和曲线信息，以及分组定义

Replay 文件是六面体网格划分的分块的脚本

鼠标和键盘操作

第二章ICEM CFD Mesh Editor界面

The Mesh Editor, 创建修改网格的集成环境，包含三个窗口

• The ICEM CFD 主窗口

• 显示窗口

• The ICEM CFD 消息窗口

主窗口

主窗口中除了图形显示区域，外，还有6个radio按钮：File, Geometry, Meshing, Edit Mesh and Output.

The File Menu

The File menu 包含

• Open, Save, Save as, Close, Quit, Project dir, Tetin file,

Domain file, B.C file, Import geo, Export geo, Options, Utilities,

Scripting, Annotations, Import mesh, DDN part.

The Geometry Menu

The Geometry menu 模型修补和编辑，边界条件的设置，调用ICEM CFD DDN。它包含

• DDN tools, Bound conds, Repair, Utilities, Global setup.

模型编辑模式，由一排彩色radiobuttons控制

• Surface, Curve, Point, Material, Density, Loop.

它们又分别具有次级菜单

• Create, Delete, Modify, Mesh params, Change family,

Copy/move.

The Meshing Menu

The meshing menu 包含ICEM CFD各种网格划分模块。只有用户拥有楼阁模块的license，他才可以使用这个模块。目前ICEMCFD提供下列模块：

• Hexa, Tetra, Global, Prism, Quad, AutoHexa, Mulcad/Padamm,

P-Cube

按不同的按钮会调用不同的模块。

The Edit Mesh Menu

The Edit Mesh menu包含必要的网格编辑功能, 粗化、平滑合并等。具体的操作有：

• Copy/move, Smooth, Refine, Coarsen, Merge, Extrude,

Diagnostics, Uncouple, Bandwidth, Change type, Change

family, Utilities, Edit nodes, Edit elements, Edit edges, Edit

Blocks, Edit subfaces, Repair

The Output Menu

The Output menu针对不同求解器进行边界条件的设置。此外用户可以调用Mom3d 和Visual3 进行网格自适应和可视化。可使用的功能有：

• Select solver, Bound conds, Solver params, Solver input,

Run solver, Visual3, Mom3d, RAMM-ICE

Note: The ICEM CFD 后处理模块Visual3, 网格优化模块Mom3d, 以及与RAMM-ICE的内燃机网格接口必须有另外的license

The Utilities Cluster

这些功能都位于主窗口的右上角：

• Help: connects the user to the ICEM CFD on-line help

• Orient: 控制显示坐标

• View: 定制显示属性

• Undo: 操作反悔

• Redo: 撤销反悔

• Print: 打印

• Shell: 调用一个X-Term命令窗口

显示窗口

The display window, 处于屏幕右边, 允许控制按照family, geometric entity, element

type and user-defined subsets来显示.

Important: Since some functions are performed only on the entities

shown, the Display window is a very important feature to use when

isolating the particular entities to be modified.

Families

Color-coded and customizable, display by family, as defined in the

mesher interface, is available in this window.

Geometry

When this button is toggled on, the user has control over the

display of geometric entities. The Opts button beside for each

entity type allows control over the display characteristics.

Note: Based on the domain file chosen, this toggle button will

either be labeled “unstructured” or “structured,” or be absent

altogether if no domain file is specified.

• Structured or Unstructured: Aside from display of the mesh

based on element type, for even greater power, ICEM CFD

allows the user to create custom subsets; the careful display of

which allows a great deal of control in the mesh operations.

• Display Subset: This toggle button allows you to define subset

of your model based on a set of numerous attributes, including

element type, screen selection, coordinate position, etc.

第三章ICEM CFD Tetra四面体网格划分器自动对CAD模型或者STL模型生成四面体网格，无需先生成表面网格