OpenFOAM基础训练教程：计算流体力学开源指南

需积分: 10 77 浏览量更新于2024-07-16 收藏 22.07MB PDF 举报

身份认证购VIP最低享 7 折!

30元优惠券

"OpenFoamTutorialSeries.pdf：这是一份OpenFOAM的官方基础培训教程，由Technische Universität Wien的Institute of Chemical, Environmental & Bioscience Engineering提供，适用于OpenFOAM®7和OpenFOAM®v1906版本。教程内容涵盖了计算流体力学的基础知识，以及开源软件OpenFOAM的使用方法。教程基于创作共用 Attribution-NonCommercial-ShareAlike 3.0 Unported许可协议，允许非商业性的分享和改编，但需遵循署名、非商业和相同方式共享的条件。" OpenFOAM是计算流体力学（CFD）领域的一款知名开源软件，它提供了一个强大的框架来解决各种复杂的流体动力学问题。OpenFOAM的官方教程旨在帮助用户理解和掌握流体力学的基本概念，同时深入学习开源算法的细节。这个教程特别适合于对CFD感兴趣的学者、工程师以及学生，无论他们是否有OpenFOAM的使用经验。在OpenFOAM教程中，你将学习到： 1. **OpenFOAM简介**：了解OpenFOAM的历史、架构和主要功能，以及它在CFD领域的重要性。 2. **安装与设置**：如何在不同的操作系统上安装OpenFOAM，配置环境变量，以及设置工作区和运行案例。 3. **网格生成**：学习如何使用OpenFOAM内置的工具生成结构化和非结构化的网格，包括边界层网格、多区域网格等。 4. **物理模型**：探讨不同流动模型，如欧拉-拉格朗日模型、连续介质模型，以及湍流模型，如RANS（Reynolds-Averaged Navier-Stokes）和LES（Large Eddy Simulation）。 5. **求解器**：介绍OpenFOAM中的各种求解器，用于模拟稳态和瞬态流动、热传输、化学反应等问题。 6. **边界条件**：理解如何设定不同的边界条件，包括无滑移壁、自由表面、远场等。 7. **后处理**：学习如何使用ParaView和其他可视化工具，分析和展示求解结果，包括速度场、压力分布、温度场等。 8. **脚本编程**：掌握OpenFOAM的控制文件（.control）和脚本语言（wmake，blockMeshDict，etc.），以自定义和自动化工作流程。 9. **案例研究**：通过实际案例分析，如管道流动、翼型分析、燃烧室模拟等，提升理解和应用能力。 10. **性能优化**：了解如何利用OpenFOAM的并行计算能力，进行大规模问题的模拟，并优化计算效率。 11. **开发与扩展**：对于高级用户，可以学习如何开发新的物理模型、求解器和后处理工具，以满足特定需求。通过OpenFOAM的官方教程，你不仅可以获得关于CFD的基本理论知识，还能深入了解开源软件的优势和灵活性，从而在学术研究或工程实践中发挥更大的价值。同时，教程遵循的非商业许可协议鼓励了知识的共享和交流，促进了社区的持续发展。

资源详情

资源推荐

OpenFOAM

Basic Training

Tutorial One

1.4.3. system directory

Solver and finite volume methods settings can be found and changed in this directory.

There are three main files in this directory:

- fvSchemes: The discretization scheme which is used for each term of the

equations are set in this file.

- fvSolution: Contains the settings to the coupling method of pressure and velocity,

the numerical methods, which are used for solving different quantities, and also

the final tolerance for convergence of that quantity.

- controlDict: The time from where simulation starts (startFrom), the time when

the simulation finishes (

stopAt), the time step (deltaT), the data saving interval

(

writeInterval), the saved data file format (writeFormat), the saved file

data precision (writePrecision), and also if changing the files during the run

can affect the run or not (runTimeModifiable) are set in this file.

Note: If the write format is ascii, then the simulation data which is written to the file

can be opened and read using any text editor. If the format is binary, the data will

be written in binary style and is not readable by text editors. The advantage of

binary over ascii is the smaller file size, and consequently faster conversion and

writing to disk, for big simulations.

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* * * * * *//

application icoFoam;

startFrom latestTime;

startTime 0;

stopAt endTime;

endTime 75;

deltaT 0.05;

writeControl timeStep;

writeInterval 20;

purgeWrite 0;

writeFormat ascii;

writePrecision 6;

writeCompression off;

timeFormat general;

timePrecision 6;

runTimeModifiable true;

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

* * * * * *//

Changed from 10 to 75 for

75 s of simulation

OpenFOAM

Basic Training

Tutorial One

Note: This simulation continues from the last time step data which is saved

(latestTime). If there was no saved data it will start from start time (startTime),

which is zero in this case.

2. Running simulation

The simulation can be run by typing the solver’s name and executing it:

>icoFoam

Note: For running the simulation the solver command (e.g. icoFoam) should be

executed inside the copy of the tutorial main folder. For example: The command

should be executed in the elbow folder, if it was run at some subfolders or somewhere

else, the simulation will fail.

3. Post-processing

3.1. Exporting simulation data

The data files created by OpenFOAM

should be exported (converted) by the

appropriate tools, to the post processing tools data format. For ParaView:

>foamToVTK

where VTK is the ParaView data format. This command should be also executed in

the case main directory, e.g. elbow. Here, ParaView is used as the post-processing

tool, for running it

>paraview &

Note: There is also another option to open the OpenFOAM

simulation results with

ParaView without converting them to VTK; Create an empty text file in the main case

directory, name it <someName>.foam (e.g. foam.foam), and execute the following

command. This method is good for fast evaluation of the data in the middle of the

simulation or with a decomposed case in parallel simulations:

>paraview foam.foam &

Note: By putting & at the end of command, the command line will remain active and

ready for further inputs while that program is running.

3.2. Examining different meshes

Do the same for the other two meshes. Only the mesh for the first simulation is

included in the elbow example of OpenFOAM

. For the other two simulations the

mesh should be provided by the user. For finding the tutorials on how to create the

geometry and the mesh, search the internet for “GAMBIT

elbow mesh 2D”. The

dimensions and also the mesh info are provided in that tutorial. Try to create it by

using GAMBIT

. When you are done you have to convert it into a 3D mesh with 1

cell in the z-direction.

The comparisons of all three case results and charts are shown below.

剩余178页未读，继续阅读

LeoSJTU

粉丝: 0
资源: 1

OpenFOAM基础训练教程：计算流体力学开源指南

python中paramiko插件

fastcache-1.1.0-cp38-cp38-win_amd64.whl

【图像检索】基于matlab颜色特征图像检索（含直方图距离）【含Matlab源码 4145期】.md

【图像加密】基于matlab混沌结合小波变换图像加密【含Matlab源码 3223期】.md

基于Java的学生管理系统的实现与代码解析

xxhash-1.4.4-cp36-cp36m-win_amd64.whl

crontablllllll

dubins-1.0.1-cp36-cp36m-win_amd64.whl

VBA汇总相同工作簿.rar

用Latex写一篇帅帅的题解

【图像融合】基于matlab GUI小波变换彩色图像融合（含评价指标）【含Matlab源码 1756期】.md

【图像检索】基于matlab GUI KNN图像检索【含Matlab源码 267期】.md

Vue.js 是一个流行的前端 JavaScript 框架，用于构建用户界面 它因其简洁的 API 和易于学习的特性而受到广泛欢

yappi-1.3.5-cp310-cp310-win_amd64.whl

winrandom-1.2.1-cp37-cp37m-win_amd64.whl

frozenlist-1.3.0-cp311-cp311-win_amd64.whl

invoice 10.PDF

【图像去噪】基于matlab非线性扩散PM算法图像去噪【含Matlab源码 2130期】.md

用C语言实现爱心代码.md

基于 OpenCV 实现图像色阶调整的 C++ 项目示例（包含详细的完整的程序和数据）

最新资源

Vue.js 是一个流行的前端 JavaScript 框架，用于构建用户界面它因其简洁的 API 和易于学习的特性而受到广泛欢