OpenFOAM顶盖驱动流详解使用说明材料(中文翻译版)

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If thestandard suite of rights granted under applicable copyright law includes additional rights not granted under this License, such additional rights are deemed to be included in the License; this License is not intended to restrict the license of any rights under applicable law.目录版权声明 (2)第一章 (15)第二章 (17)2.1 顶盖驱动流 (17)2.1.1 前处理 (18)2.1.1.1 网格生成 (18)2.1.1.2 边界和初始条件 (20)2.1.1.3 物理特性 (21)2.1.1.4 控制 (22)2.1.1.5 离散方法和矩阵求解器设置 (23)2.1.2 查看网格 (23)2.1.3 运行算例 (24)2.1.4 后处理 (25)2.1.4.1 等值面和云图 (25)2.1.4.2 矢量图 (27)2.1.4.3 绘制流线图 (29)2.1.5 网格细化 (29)2.1.5.1 使用存在的算例创造新算例 (29)2.1.5.2 生成细网格 (29)2.1.5.3 投影算例结果 (31)2.1.5.4 控制参数 (32)2.1.5.5 后台运行 (32)2.1.5.6 在细网格上绘制矢量 (32)2.1.5.7 绘图 (33)2.1.6 网格非均匀分布 (35)2.1.6.1 创建非均匀化网格 (36)2.1.6.2 调整时间步 (37)2.1.6.3 投影场 (38)2.1.7 增加雷诺数 (38)2.1.7.1 前处理 (38)2.1.7.2 运行算例 (39)2.1.8 高雷诺数流动 (40)2.1.8.1 前处理 (40)2.1.8.2 运行 (42)2.1.9 改变算例几何 (42)2.1.10 后处理 (46)2.2 带孔盘体应力分析 (46)2.2.1 网格生成 (47)2.2.1.1 边界和初始条件 (50)2.2.1.2 物理特性 (51)2.2.1.3 热物理特性 (51)2.2.1.4 控制 (51)2.2.1.5 离散格式和求解器控制 (52)2.2.2 运行 (54)2.2.3 后处理 (54)2.2.4 练习 (56)2.2.4.1 增加网格数量 (56)2.2.4.2 引入网格非均匀化 (56)2.2.4.3 改变平板尺寸 (56)2.3 溃坝 (56)2.3.1 生成网格 (57)2.3.2 边界条件 (59)2.3.3 设置初始场 (59)2.3.4 流体特性 (60)2.3.5 湍流模型 (61)2.3.6 时间步长控制 (61)2.3.7 离散格式 (62)2.3.8 矩阵求解器控制 (63)2.3.9 运行程序 (63)2.3.10 后处理 (64)2.3.11 并行运行 (64)2.3.12 算例的并行后处理 (67)第三章 (69)3.1 OpenFOAM编程语言 (69)3.1.1 普适性编程语言 (69)3.1.2 面向对象和C++ (70)3.1.3 方程呈现 (70)3.1.4 求解器代码 (71)3.2 编译程序和库 (71)3.2.1 头文件：.H (71)3.2.2 使用wmake进行编译 (73)3.2.2.1 包含文件头 (73)3.2.2.2 链接库 (74)3.2.2.3 编译源文件 (75)3.2.2.4 运行wmake (75)3.2.2.5 wmake环境变量设置 (76)3.2.3 移除依赖包文件：wclean和rmdepall (76)3.2.4 编译实例：pisoFoam求解器 (77)3.2.5 调试与优化 (79)3.2.6使用自定义库 (80)3.3 运行程序 (81)3.4 并行计算 (81)3.4.1 网格分解与初始场数据 (81)3.4.2 运行分解算例 (84)3.4.3 多硬盘数据阵列分布 (84)3.4.4 并行后处理 (85)3.4.4.2 分解场后处理 (85)3.5 标准求解器 (85)3.6 标准工具 (90)3.7 标准库 (97)第四章 (105)4.1 OpenFOAM文件结构 (105)4.2 基本输入输出格式 (106)4.2.1 通用语法规则 (106)4.2.2 字典 (106)4.2.3头文件 (107)4.2.4 链表 (108)4.2.5 Scalar标量、Vector矢量、Tensor张量 (109)4.2.6 量纲 (109)4.2.7 单位类型 (110)4.2.8 场 (110)4.2.9 指令和宏替换 (111)4.2.10 #include和#inputMode指令 (112)4.2.11 #codeStream指令 (112)4.3 时间和输入输出控制 (113)4.4 离散格式 (116)4.4.1 插值格式(interpolationSchemes) (117)4.4.1.1 严格有界标量格式 (118)4.4.1.2 针对矢量场的格式 (118)4.4.2 面法向梯度格式(snGradSchemes) (119)4.4.3 梯度格式(gradSchemes) (120)4.4.4 拉普拉斯格式(laplacianSchemes) (121)4.4.5 散度格式 (121)4.4.6 时间格式 (122)4.4.7 通量计算 (122)4.5 求解和算法控制 (123)4.5.1 矩阵求解器 (123)4.5.1.1 求解误差 (124)4.5.1.2 预条件双共轭梯度求解器 (125)4.5.1.3 光顺矩阵求解器 (125)4.5.1.4 GAMG (125)4.5.2 低松弛 (126)4.5.3 PISO和SIMPLE算法 (127)4.5.3.1 参考压力 (127)4.5.4 其它参数 (128)第五章 (129)5.1 网格 (129)5.1.1 网格规范以及限制 (129)5.1.1.1 点 (130)5.1.1.3 网格单元 (131)5.1.1.5 边界 (131)5.1.2 polyMesh (131)5.1.3 cellShape (132)5.1.4 一维、二维以及轴对称问题 (133)5.2 边界 (133)5.2.1 在OpenFOAM中指定边界条件 (135)5.2.2 基本类型 (136)5.2.3 主要类型 (138)5.2.4 衍生类型 (138)5.3 blockMesh网格生成程序 (140)5.3.1 编写blockMeshDict文件 (140)5.2.1.1 顶点 (141)5.3.1.2 边 (142)5.3.1.3 块 (142)5.3.1.4 block多重非均匀处理 (143)5.3.1.5 边界 (145)5.3.2 多块网格 (146)5.3.3 少于8个顶点的block (148)5.3.4 运行blockMesh (149)5.4 snappyHexMesh网格生成工具 (149)5.4.1 snappyHexMesh网格生成 (149)5.4.2 创建六面体背景网格 (151)5.4.3 特征边和特征面网格切分 (152)5.4.4 网格移除 (154)5.4.5 指定区域网格细化 (154)5.4.6 表面对齐 (155)5.4.7 网格边界层 (155)5.4.8 网格质量控制 (158)5.5 网格转换 (158)5.5.1 fluentMeshToFoam (159)5.5.2 starToFoam (160)5.5.2.1 转换STAR-CD网格的一般建议 (160)5.5.2.2 消除多余数据 (160)5.5.2.3 去掉默认边界条件 (161)5.5.2.4 模型重新编号 (162)5.5.2.5 写入数据 (163)5.5.2.6 .vrt文件可能的问题 (163)5.5.2.7 转换为OpenFOAM可用格式 (164)5.5.3 gambitToFoam (164)5.5.4 ideasToFoam (164)5.5.5 cfx4ToFoam (165)5.6 不同几何上的投影场 (165)5.6.2 非连续场投影 (165)5.6.3 并行投影 (167)第六章 (169)6.1 paraFoam (169)6.1.1 paraFoam概述 (169)6.1.2 Properties 面板 (170)6.1.3 display面板 (172)6.1.4 工具栏 (173)6.1.5 效果展示 (173)6.1.5.1 View设置 (173)6.1.5.2 常规设定 (174)6.1.6 云图绘制 (174)6.1.6.1 剖面 (174)6.1.7 矢量图绘制 (174)6.1.7.1 在网格中心绘制 (175)6.1.8 流线图 (175)6.1.9 输出图片 (175)6.1.10 动画输出 (175)6.2 附加函数工具 (176)6.2.1 使用函数工具 (178)6.2.2 预定义函数工具包 (179)6.3 使用Fluent来后处理 (181)6.4 使用Fieldview后处理 (182)6.5 使用EnSight进行后处理 (183)6.5.1转换数据为EnSight格式 (183)6.5.2 ensight74FoamExec插件 (183)6.5.2.1 EnSight用户插件 (183)6.5.2.2 使用用户自定义插件 (184)6.6 提取数据 (184)6.7 监控和管理进程 (187)6.7.1 运行进程的foamJob脚本 (188)6.7.2 监控进程的foamLog脚本 (188)第七章 (191)7.1 热物理模型 (191)7.1.1 热物理模型库以及混合模型 (192)7.1.2 传递模型 (193)7.1.3 热动力学模型 (193)7.1.4 组分的量 (194)7.1.5 状态方程 (195)7.1.6能量方程变量选择 (196)7.1.7热物理模型数据属性 (196)7.2 湍流模型 (197)7.2.1 模型系数 (198)7.3 流变模型 (199)7.3.1 牛顿流变模型 (199)7.3.2 Bird-Carreau流变模型 (199)7.3.3 Cross幂率流变模型 (200)7.3.4 幂率模型 (200)7.3.5 Herschel-Bulkley流变模型 (201)第一章导论本手册是OpenFOAM（开源场运算与操作C++类库）使用指南。

引言这是开源场运算和操作C++库类(ope nfoam)的使用指南。

他详细描述了Ope nF OAM的基本操作。

首先通过第二章一系列教程练习。

然后通过对更多的独立组件的更详细的描述学习ope nfoam。

Of首先主要是一个C++库类，主要用于创建可执行文件，比如应用程序(application)。

应用程序分成两类：求解器，都是为了解决特定的连续介质力学问题而设计的；公用工程，这些是为了执行包括数据操作等任务而设计的。

Of包括了数量众多的solver和utilities，牵涉的问题也比较广泛。

将在第三章进行详尽的描述。

Of的一个强项是用户可以通过必要的预备知识(包括数学，物理和编程技术)创建新的solvers和utilities。

Of需要前处理和后处理环境。

前处理、后处理接口就是of本身的实用程序(utilities)，以此确保协调的数据传输环境。

图1.1是of总体的结构。

第4章和第五章描述了前处理和运行of 的案例。

既包括用of提供的meshgen erato划分网格也包括第三方软件生成的网格数据转换。

第六章介绍后处理。

Chapter 2指导手册在这一章中我们详细描述了安装过程，模拟和后进程处理一些Ope nF OAM测试案例，以引导用户运行OpenFOAM的基本程序。

$FOAM_TUTORIALS目录包含许多案件演示of提供的所有求解器以及许多共用程序的使用，在试图运行教程之前，用户必须首先确保他们已经正确地安装了Ope nF OAM。

该教程案件描述blockMesh预处理工具的使用，paraFoam案例设置和运行Ope nF OAM求解器及使用paraFoam进行后处理。

使用OpenFOAM支持的第三方后处理软件的用户可以选择：他们要么可以按照教程使用paraFoam,或当需要后处理时参阅第六章的第三方软件使用说明。

OpenFOAM安装目录下的tutorials目录中所有的指导手册都是可复制的。

[转载]使用openfoam的基本流前处理主要包括：网格的生成，物理参数的设定，初始边界条件的设定，求解控制设定，方程求解方法的选择，离散格式的选择。

网格生成：OpenFOAM带有自己的网格生成功能blockMesh,他可以生成块结构化网格，使用比较简单，但对于复杂几何，该功能实施比较复杂。

可以采用其网格软件如：gridgen，pointwi s e，gambit，icemcfd，tetgen,gmesh,ansys等生成网格，通过网格转换功能将其转换为openfoam可识别的网格。

我本人通常采用gridgen生成fluent网格，再采用fluentMeshToFaom功能转换为openfoam可识别网格。

物理参数的设置：OpenFOAM中的物理参数文件都在当前case文件夹里面的constant文件夹中，里面常用的文件通常常有environmentalP roperties：设定环境参数，重力加速度transportP roperties：传输相关参数，比如黏性，密度，对于非牛顿流体的黏性模型及其参数等LE SP roperties：大涡模型及其相关的模型参数RASP roperties: 雷诺时均模型及其相关模型参数thermodynamicP roperties：热物理相关参数这些文件的名字由solver里面定义，可以任意更改，上面书写是openfoam中的一个惯例，至于如何更改，请参看sol ver说明。

初始边界条件的设定：初始条件和边界条件设定都在case文件夹中的0文件夹中，在Openfoam中，每个求解变量都有自己的单独的求解文件，下面以/OpenFOAM/OpenFOAM-1.5/tutorials/icoFoam/cavity/0/p压力文件为例进行说明FoamFile //文件头{version 2.0; //版本号format ascii; //存储形式二进制或者asciiclass volScalarField;//场的类型，体心标量场object p; //场的名字}// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ////场的单位，应当注意这里的压强单位并非实际压强，而是压强除去密度(p/rho)的单位//因为openfoam对动量方程直接求解的速度dimensions [0 2 -2 0 0 0 0];//初始条件：内部场为均匀场，所有全为0，如果不均匀场则采用setField或者funkySetField对初始场进行//设置,如何使用这些功能，以后再说明。

OpenfoamOpenfoam的简介及使用方法：openFOAM是一个具有开源代码的CFD模拟软件，运行于LINUX操作系统中（运行于WINDOWS下的LINUX虚拟环境同样可以），目前最新版本为1.3。

受GNU Free Documentation License 保护，不过既然是开源软件，自然可以随便传播了，但是对源代码和说明文档的随意篡改是不负责任的，所以没有十足的把握，还是要尊重原始版权吧。

openFOAM，open Field Operation and Manipulation，字面意思就是“开放的域操作和处理”，貌似和CFD没有什么关系，但是它却可以处理很多CFD问题抑或偏微分方程数值解问题。

openFOAM是采用面向对象方法（Object-Orientation Method），采用C++语言编写的一个“库”（Library）。

个人感觉很像Delphi，软件本身提供了大量的类，用户可以根据自己的需求和喜好进行组织、程序设计。

与Delphi不同的是，openFOAM本身并不是一个编译环境，用户需要自己选用第三方软件来进行编译，这样一来，实际上openFOAM只提供了“料”，而与之对比的，Delphi则既提供了“料”，又提供了“锅”。

个人感觉，openFOAM 可以像Delphi那样，形成自己的编译环境，这样应该更有利于应用和推广，不过希望不要商业化才好，毕竟大家都喜欢用免费的东西：）openFOAM是个软件，但是其本身又不会运行，这就是为什么我们仅仅称之为库的原因。

但我们使用它，自然希望得到可以用的软件（application）。

利用openFOAM可以得到两种类型的application：求解器solver和工具utility，前者用来解决数值计算上的问题，而后者用来进行前处理和后处理。

至于怎么得到这些application，显然，需要我们用C++编程实现了。

我们编程，自然不应该从零开始，因为我们有openFOAM，这是我们进行CFD模拟工作的基石。

引言这是开源场运算和操作c++库类（openfoam）的使用指南。

他详细描述了OpenFOAM的基本操作。

首先通过第二章一系列教程练习。

然后通过对更多的独立组件的更详细的描述学习openfoam。

Of首先主要是一个c++库类，主要用于创建可执行文件，比如应用程序（application）。

应用程序分成两类：求解器，都是为了解决特定的连续介质力学问题而设计的；公用工程，这些是为了执行包括数据操作等任务而设计的。

Of包括了数量众多的solver和utilities，牵涉的问题也比较广泛。

将在第三章进行详尽的描述。

Of 的一个强项是用户可以通过必要的预备知识(包括数学，物理和编程技术)创建新的solvers 和utilities。

Of需要前处理和后处理环境。

前处理、后处理接口就是of本身的实用程序（utilities），以此确保协调的数据传输环境。

图1.1是of总体的结构。

第4章和第五章描述了前处理和运行of 的案例。

既包括用of提供的meshgenerator划分网格也包括第三方软件生成的网格数据转换。

第六章介绍后处理。

Chapter 2指导手册在这一章中我们详细描述了安装过程，模拟和后进程处理一些OpenFOAM测试案例，以引导用户运行OpenFOAM的基本程序。

$FOAM_TUTORIALS 目录包含许多案件演示of提供的所有求解器以及许多共用程序的使用，在试图运行教程之前，用户必须首先确保他们已经正确地安装了OpenFOAM。

该教程案件描述 blockMesh预处理工具的使用，paraFoam案例设置和运行OpenFOAM求解器及使用paraFoam进行后处理。

使用OpenFOAM支持的第三方后处理软件的用户可以选择：他们要么可以按照教程使用paraFoam，或当需要后处理时参阅第六章的第三方软件使用说明。

OpenFOAM安装目录下的tutorials目录中所有的指导手册都是可复制的。

教程根据流动类型分列在不同的目录下，对应子目录根据求解器slover分类。

openfoam mesh 解读【原创版】目录1.OpenFOAM 介绍2.OpenFOAM 中的网格（mesh）概念3.OpenFOAM 网格文件的格式与结构4.OpenFOAM 网格的创建与编辑5.OpenFOAM 网格的应用案例正文【1.OpenFOAM 介绍】OpenFOAM 是一个开源的计算流体力学（CFD）软件，广泛应用于工程和科学领域。

OpenFOAM 基于 C++编写，提供了一个完整的 CFD 求解器体系结构，包括湍流模型、边界层、多相流、化学反应等。

用户可以利用OpenFOAM 进行网格划分、求解和后处理等操作，满足各种流体动力学问题的求解需求。

【2.OpenFOAM 中的网格（mesh）概念】在 OpenFOAM 中，网格（mesh）是求解流体动力学问题的基础。

网格是将求解域离散化的结果，通过将求解域划分为多个小区域（单元），并在每个小区域内指定适当的数学模型和物理参数，从而实现对流体动力学问题的数值求解。

【3.OpenFOAM 网格文件的格式与结构】OpenFOAM 中的网格文件采用.msh 格式。

一个典型的.msh 文件包含以下几部分：1.文件头：包含文件的类型、版本和时间等信息；2.网格类型定义：定义网格的单元类型（如四面体、六面体等）；3.网格单元信息：存储每个单元的节点坐标和单元类型；4.节点属性：定义节点的物理属性，如速度、压力等；5.区域和边界信息：定义求解域的区域和边界；6.其他信息：如求解器设置、初始条件等。

【4.OpenFOAM 网格的创建与编辑】OpenFOAM 提供了网格创建和编辑的工具，用户可以根据需求创建或编辑网格文件。

常用的网格创建和编辑工具包括：1.foamMesh：用于创建和编辑.msh 格式的网格文件；2.polyMesh：用于将.msh 文件转换为.pmx 格式的网格文件；3.pmxMesh：用于编辑.pmx 格式的网格文件；4.fvMesh：用于将.pmx 文件转换为.fv 格式的文件，以进行求解。

openfoam十周培训讲义 30次授课内容OpenFOAM是一个自由开源的计算流体力学（CFD）软件包，被广泛应用于工程领域。

为了帮助初学者快速掌握OpenFOAM的使用，一共进行了30次培训授课。

以下是这30次授课内容的总结。

第一次授课：介绍OpenFOAM的背景和基本理论知识。

介绍CFD的基本概念和方程式（Navier-Stokes、连续性方程等），并解释如何在OpenFOAM中实现这些方程。

第二次授课：介绍OpenFOAM的安装和配置。

讲解如何下载、安装和配置OpenFOAM，并演示如何设置环境变量、建立工作目录等基本操作。

第三次授课：开展第一个OpenFOAM案例。

介绍如何使用OpenFOAM 进行基本的流体模拟，包括如何准备网格、设置边界条件、运行求解器等。

第四次授课：介绍网格生成工具。

讲解如何使用snappyHexMesh 进行网格生成，以及常见的参数设置和技巧。

第五次授课：使用其他网格生成工具。

介绍使用其他网格生成工具（如blockMesh、cfMesh）的方法和注意事项。

第六次授课：介绍OpenFOAM的网格后处理工具。

演示如何使用paraFoam、Post-processing等工具进行结果的可视化和分析。

第七次授课：介绍OpenFOAM的物理模型。

讲解如何在OpenFOAM中设置不同的物理模型（湍流模型、辐射模型等），并解释每种模型的应用范围和限制。

第八次授课：讲解多相流模拟。

介绍如何使用OpenFOAM进行多相流模拟，包括欧拉-拉格朗日法、欧拉-欧拉法等。

第九次授课：介绍OpenFOAM的边界条件。

讲解不同类型的边界条件的设置方法和使用技巧。

第十次授课：介绍OpenFOAM的求解器。

讲解OpenFOAM中常用的求解器（如icoFoam、simpleFoam、pisoFoam等）的原理和使用方法。

第十一次授课：介绍OpenFOAM的并行计算方法。

讲解如何使用OpenFOAM进行并行计算，提高计算效率。

OpenFOAM Tutorial Standard SolversboundaryFoam= = = = = = = =Steady-state solver for 1D turbulent flow, typically to generate boundary layer conditions at an inlet, for use in a simulationExample Problems:boundaryLaunderSharma model which has the ability to in model cases and predictby-pass transition, using the Launder equations. boundaryWallFunctions solves a 1D turbulent model with two walls and one cyclicboundaries.bubbleFoam= = = = = = = =Solver for a system of two incompressible fluid phases with one phase dispersed, e.g. gas bubbles in a liquidExample Problem:bubbleColumnclassic bubble column problem with an inlet and outlet for thefoam and bubbles and two walls.buoyantFoam= = = = = = = = =Transient Solver for buoyant, turbulent flow of compressible fluids for ventilation and heat-transferExample Problem:hotRoom 3D environment with one inlet, the “floor”, which the usercan make any temperature and watch the thermal effects.i.e., thermal plume emanating from a 600 degreesource on the floorbuoyantSimpleFoam= = = = = = = = = = = = =Steady-state solver for buoyant, turbulent flow of compressible fluids for ventilation and heat-transferExample Problem:hotRoom same as the first hot room, however this solver is steadystate, showing a longer process, rather than transient.buoyantSimpleRadiationFoam= = = = = = = = = = = = = = = = = = =Steady-state solver for buoyant, turbulent flow of compressible fluids with radiation, for ventilation and heat-transferExample Problem:hotRadiationRoom a much finer mesh room than the previous two hotRoomcases, along with an elevated heating source, radiation channelOodles= = = = = = = = =Incompressible LES solver for flow in a channelExample Problem:channel395 solves for channel flow, with several cyclic patches andonly two top and bottom walls. Able to keep the mass flowrate in the channel constant, by calculating the velocity ateach step, takes a long time to run. chtMultiRegionFoam= = = = = = = = = = = = =Solver that couples conjugate heat transfer in a solid to a buoyancy-driven flow simulationExample Problem:multiRegionHeater same as the hotRoom example problems, however thishas multiple sources for heat, not just one compressibleLesInterFoam= = = = = = = = = = = = = = = = =Solver for 2 compressible, isothermal immiscible fluids using a volume of fluid (VOF) phase-fraction based interface capturing approach, with LESExample Problems:depthCharge2D modeled on a scale, a charge is blown in the mixtureand the turbulence is modeled in a 2D environmentbased off the run time and a single momentum equation depthCharge3D same thing as the first, but in a 3D environment.coodles= = = = =Coodles is a generic single-phase compressible LES solverExample Problem:pitzDaily a simple 2D compression, inlet turbulence case withpropane for the fluid, with an applicable mesh dieselFoam= = = = = = =Diesel spray and combustion codeExample Problem:aachenBomb block filled with air, a diesel injector is placed on the topcenter of the block and n-Heptane is injected, evaporatesand combustsdnsFoam= = = = = =Direct numerical simulation solver for boxes of isotropic turbulenceExample Problem:boxTurb16 a box made up of six cyclic patches to model isotropicturbulenceelectrostaticFoam= = = = = = = = = = =Solver for electrostaticsExample Problem:chargedWire an electrostatic solver with user input values for the electricfield strengthengineFoam= = = = = = = =Solver for internal combustion enginesExample Problem:kivaTest a very complex mesh of a combustion engine of a cylinderfour pistonsfinancialFoam= = = = = = = = =Solves the Black-Scholes equation to price commoditiesExample Problem:europeanCall gives the price C of the trading cost S, the mesh is 1D gnemdFoam= = = = = = = =General purpose molecular dynamics solver to simulate atoms in arbitrary shaped domains and average atomic/molecular quantities to the mesh to create field data Example Problems:constrictedChannel demonstrates multiple species, tethered molecules, fieldplots and the flexibility offered by molConfig nanoNozzle a channel with a complex shape of solid walls, where asection of neon is driven along with mixes of argon, usedto demonstrate molecule demonstration icoDyMFoam= = = = = = = = =Transient solver for incompressible, laminar flow of Newtonian fluids with dynamic meshExample Problem:movingCone a dynamic moving mesh that the user can manipulate toproduce desired outcome, simplest moving mesh icoFoam= = = = = =Transient solver for incompressible, laminar flow of Newtonian fluidsExample Problems:cavity enclosed square flow field with one moving boundary cavityClipped the same cavity, but a square of length of 0.04 m isremoved from the bottom right of the cavity cavityGrade same as the cavity mesh, however there are now fourindividual blocks in the cavityelbow models the same simulation as the cavity cases, however itis not the traditional block mesh, but bent into an elbow= = = = = = = = = =Solver for 2 incompressible fluids, which captures the interface using a VOF method with optional mesh motionExample Problems:damBreakWithObstacle a wall of water falls, and crashes into an obstacle inside a3D environmentsloshingTank2D a 2D environment that creates sloshing water to simulatecrashing and oscillating wavessloshingTank2D3DoF Couldn’t find anythingsloshingTank3D a 3D environment that created sloshing water to simulatecrashing and oscillating wavessloshingTank3D3DoF Couldn’t find anythingsloshingTank3D6DoF Couldn’t find anythinginterFoam= = = = = = =Solver for 2 incompressible fluids, which captures the interface using a VOF method Example Promblem:damBreak: simulation of a breaking wall, the water runs into an objectand is projected around the 2D environment, modeled fromuser defined time stepslaplacianFoam= = = = = = = = =Solves a simple Laplace equation, e.g. for thermal diffusion in a solidExample Problem:flange a complex mesh of a flange, shows thermal diffusionthrough the solidlesCavitatingFoam= = = = = = = = = = = =Transient cavitation code with LES turbulenceExample Problems:throttle a 2D mesh consisting of two main chambers and a smallconnecting tube, from the tube there is a thrusting source throttle3D same case as seen in 3D= = = = = = = = =Solver for 2 incompressible fluids capturing the interface. Turbulence is modeled using a runtime selectable incompressible LES modelExample Problem:nozzleFlow2D a nozzle is inserted into the bottom left of a wedgecontainer, pouring in a liquid, very applicable but runsslower than rasInterFoammdEquilibrationFoam= = = = = = = = = = = = = =Solver that equilibrates and/or preconditions molecular dynamics systemsExample Problem:periodicCube a cubic domain with a periodic boundary in each direction,there is a lattice of molecules, each in a block, heated to atarget temperaturemhdFoam= = = = = = =Solver for magnetohydrodynamics (MHD): incompressible, laminar flow of a conducting fluid under the influence of a magnetic fieldExample Problem:hartmann this solves the coupled Maxwell-Navier-Stokes equationsfor an incompressible fluid, with a presumed constantelectrical conductivityMRFSimpleFoam= = = = = = = = = = =Steady state solver for incompressible turbulent flow with Multiple Reference Frames regionsExample Problem:mixerVessel2D a 2D rotator or impellor working in a constant flow, canwork at any RPMmultiphaseInterFoam= = = = = = = = = = = = = =Solver for an arbitrary number of incompressible immiscible fluids, capturing the multiple interfaces using a VOF methodExample Problem:damBreak4phase same as the damBreak case, however this case containsdifferent fluids at different levels in the meshdamBreak4phaseFine same, just with a finer mesh for greater resolution nonNewtonianIcoFoam= = = = = = = = = = = = = = =Transient solver for incompressible, laminar flow of non-Newtonian fluidsExample Problem:offsetCylinder same as the icoFoam tutorial, however in the mesh there isa cylinder, and it is made to investigate laminar flowaround the cylinderoodles= = = =Incompressible LES solverExample Problems:pitzDaily same as the coodles case with a very fine mesh, 244k cells.So it runs very slowlypitzDailyDirectMapped the same as the pitzDaily case with a longer inlet,the mesh is still composed of mainly walls potentialFoam= = = = = = = = =Simple potential flow solver which can be used to generate starting fields for full Navier-Stokes codesExample Problems:cylinder non-orthogonal mesh, investigate potential flow around acylinderpitzDaily same as the other pitzDaily examples however, this caseconsiders the Navier-Stokes equations and can be any fluidrasCavitatingFoam= = = = = = = = = = = =Transient cavitation code with RAS turbulenceExample Problem:throttle same thruster problem just as in lesCavitatingFoam,however, it doesn’t use LES turbulence for the thrust rasInterFoam= = = = = = = = =Solver for 2 incompressible fluids capturing the interface. Turbulence is modeled using a runtime selectable incompressible RAS modelExample Problem:damBreak same as the other damBreak cases, however this has a RASliquid, the refore the turbulence isn’t as great from the othercasesrhoCentralFoam= = = = = = = = = = =Density-based compressible flow solver based on central-upwind schemesExample Problems:biconic25-55Run35 a rather simple mesh made for thermodynamics, with anand a field stream, this case contains a “perfect gas”forwardStep a flow of Mach 3 at an inlet to a rectangular geometry witha step near the inlet region that generates shock waves, cangenerate a supersonic flowLadenburgJet60psi Coul dn’t Find AnythingobliqueShock 2D aerodynamic test problem, there is a supersonic inletinto the simple rectangular mesh, made to represent thereflection of an oblique shock, such as a plane going mach shockTube traditional shock tube problem, a 2D environment in whicha shock wave is produced and the high-pressure andtemperature gasses are shownwedge15Ma5 very similar to the oblique shock case, however the meshesbottom right side has been cut out, the supersonic inlet hasnow been moved to the vertex of the cut= = = = = = = = = =Transient solver for turbulent flow of compressible fluids for ventilation and heat-transfer Example Problem:angledDuct a simple mesh of a duct that is bent at an angle, gas is thrustthrough the inlet and makes its way to the outlet whileheating the mesh as wellrhoPorousSimpleFoam= = = = = = = = = = = = = =Steady-state solver for turbulent flow of compressible fluids with implicit or explicit porosity treatmentExample Problems:angledDuctExplicit duct with a rectangular cross section with a sharp 45_ bendat the center. The porous media is added where the duct isbending and it goes halfway up the angled duct angledDuctImplicit same as the other solver, the difference is the porosity ofexamples, this example has a finer mesh, and therefore isfar more robustrhopSonicFoam= = = = = = = = = =Pressure-density-based compressible flow solverExample Problems:shockTube a one dimensional unsteady case where a discontinuity,normally in pressure, is introduced in the middle of thedomainwedge15Ma5 same as the first wedge case, without the upward scheme,as the solver is also pressure basedrhoSonicFoam= = = = = = = = =Density-based compressible flow solverExample Problems:forwardStep same as the first forward step without the applied upwardschemeshockTube same tube and solver again, however this one is neitherpressure or central-upwind scheme based= = = = = = = = =Transient solver for compressible, turbulent flowExample Problem:cavity the same as the icoFoam case however this isn’t a laminarflow, as well the lid is no longer the transient side but theback wallrhoTurbTwinParcelFoam= = = = = = = = = = = = = = = =Transient solver for compressible, turbulent flow with two thermo-cloudsExample Problem:simplifiedSiwek multiregion lagrangian clouds, in a squar 2D mesh with along inlet in the top left corner, shows turbulent flow intocompression of the gasscalarTransportFoam= = = = = = = = = = = = = =Solves a transport equation for a passive scalarExample Problem:pitzDaily scalar transport, swirl test: non-uniform initial field, usingfield algebrasettlingFoam= = = = = = = =Solver for 2 incompressible fluids for simulating the settling of the dispersed phase Example Problems:dahl a very fine 2D mesh in which two 2 fluids are released, oneone from the top and the other from the bottom, they thensettle togethertank3D Couldn’t find anythingsimpleFoam= = = = = = = =Steady-state solver for incompressible, turbulent flow of non-Newtonian fluids Example Problems:airFoil2D a 2D airfoil in a large square mesh, that is put into the flowof turbulent non-Newtonian fluidspitzDaily same as all the others, however this version has a turbulentflowpitzDailyExptInlet same thing with a different inletsimpleSRFFoam= = = = = = = = = =Steady, incompressible, rotating reference frameExample Problem:mixer a large 3D rotor, can be applied in many different ways snappyHexMesh= = = = = = = = = =Automatic meshing toolExample Problems:iglooWithFridges exactly as advertised, an igloo with 2 fridges in it, simplyused to show how the tool worksmotorBike once again, simply here to show how the tool works solidDisplacementFoam= = = = = = = = = = = = = = =Transient segregated finite-volume solver of linear-elastic, small-strain deformation of a solid body, with optional thermal diffusion and thermal stressesExample Problem:plateHole a square mesh with a quarter circle cut out of the bottomleft corner, pressure is applied to the plate for stressanalysissolidEquilibriumDisplacementFoam= = = = = = = = = = = = = = = = = = = = = =Steady-state segregated finite-volume solver of linear-elastic, small-strain deformation of a solid bodyExample Problem:beamEndLoad a rectangular beam is strained, testing the elastic propertiesof the material, as well stress is shown in the beam sonicFoam= = = = = = =Transient solver for trans-sonic/supersonic, laminar flow of a compressible gas. Example Problems:forwardStep same as the other forwardStep problems, however thiscontains a laminar flow rather than turboshockTube another version of a shock tube problem with a laminarflow and compressible gassonicLiquidFoam= = = = = = = = = = =Transient solver for trans-sonic/supersonic, laminar flow of a compressible liquid Example Problem:decompressionTank a simple tank under high pressure becomes decompressedby a nozzle inserted in the side of the tank sonicTurbFoam= = = = = = = = = =Transient solver for trans-sonic/supersonic, turbulent flow of a compressible gas Example Problems:nacaAirfoil a supersonic flow around a 2D NACA airfoilprism a supersonic flow blown around a 2D prismturbFoam= = = = = =Transient solver for incompressible, turbulent flowExample Problemcavity same as the last cavity case, however it containsincompressible gastwoPhaseEulerFoam= = = = = = = = = = = = =Solver for a system of 2 incompressible fluid phases with one phase dispersed, e.g. gas bubbles in a liquidExample Problems:bed couldn’t find anythingbed2 couldn’t find anythingbubbleColumn couldn’t find anythingXiFoam= = = = =Compressible premixed/partially-premixed combustion solver with turbulence modeling Example Problem:moriyoshiHomogeneous couldn’t find anythingXoodles= = = = =Compressible premixed/partially-premixed combustion solver with large-eddy simulation (LES) turbulence modelingExample Problems:pitzDaily couldn’t find anythingpitzDaily3D couldn’t find anything。