OpenFOAM/C2/Installing-Running/English

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Tutorial; Installing and Running OpenFOAM and Paraview


Script and Narration : Rahul Joshi


Keywords: Video tutorial,CFD,Installing OpenFOAM,Paraview.


Visual Cue
Narration
Slide 1: Hello and welcome to the spoken tutorial on Installing and running OpenFOAM and paraView.
Slide 2: Learning Objectives In this tutorial I will show you


how to install and run


OpenFOAM


Paraview and


How to solve a lid driven cavity.

Slide 3:

System Requirement

To record this tutorial


I am using Linux Operating system Ubuntu 10.04


OpenFOAM version 2.1.0


ParaView version 3.12.0


Note that OpenFOAM does not run on Windows platform.


Also Note OpenFOAM v 2.1.0 is compatible with linux version 10.04 and above.

Slide 4

Prerequisites

To practice this tutorial you should have some basic knowledge of


Computational Fluid Dynamics.


And Linux Commands.

Slide 5

About OpenFOAM

Let me introduce you to OpenFOAM
Open source software It is an Open Source


Computational Fluid Dynamics Software.

Wide range of solvers


2d as well as 3d problems

It contains a wide range of solvers for solving CFD problems of


2dimensional


as well as


3dimensionals.

Slide 6:

About paraView

Now let me introduce you to Paraview:


It is used for visualizing results obtained in OpenFOAM.

Slide 7: OpenFOAM and paraView can also be installed


through Synaptic package manager

Demo:

Synaptic Package Manager

For Synaptic Package Manager go to System > Administration > Synaptic Package Manager
Enter your system password Type your password.
Search box – type OpenFOAM In the Search Box type OpenFOAM
you can see openfoam as well as paraView.
Mark both Openfoam and paraview Mark both of them for installation
Click on mark and then Apply
Installation may take some time.
OpenFOAM and Paraview are installed.
Slide 7 : For more details on Synaptic Package Manager


please visit our website on this URL : http://www.spoken-tutorials.org



Slide 8 : Alternately you can also install OpenFOAM and paraView


from openfoam website on this url:


http://www.openfoam.com/download

Open browser Let me open up the browser
In the browser URL type : http://www.openfoam.com/download


Press Enter

Scroll down and go to ubuntu deb pack installation Scroll Down and go to Ubuntu Deb pack


Let me zoom this

Go to Ubuntu deb pack installation


Click on it

Let me zoom out


Scroll down

Copy the first line to insert in command trminal


paste it in command terminal

From the first point of installation


copy the command line and


paste it in the terminal window



Open command terminal


Press Ctrl+Alt+t on keyboard


Application > Accessories > Terminal

To open up a the terminal window


press Ctrl,Alt and t keys simultaneously on your keyboard


or


go to Application > Accessories > Terminal

paste it in command terminal Open up a terminal window


Now copy this command line and paste it in the terminal window

Replace lsb_release -cs by the ubuntu version name Note that in place of 'lsb_release -cs'


replace it with the name of Linux version you are using

Switch back to the browser


Scroll up

Replace it by lucid for ubuntu 10.04 I will replace this by lucid


Press enter

Installation is incomplete


Follow steps for installation

Note that Installation here is incomplete


if you follow the steps in the


sequence 1-2-3-4 you will be done through with the installation.

I have already installed OpenFOAM


through Synaptic Pacakage Manage some while ago

Configure the software and test its working Now we need to configure the installed software
Edit the bash file To do this we need to edit the bash file
In command terminal


type gedit ~/.bashrc

Open a new command terminal.


In the command terminal type : 'gedit ~/.bashrc'

This opens up the bash file,

Let me drag this to the capture area


scroll down to the bottom of the bash file

Browser window Now switch back to the browser


Scroll down and go to user configration

Look at the second point


copy the source line


paste it at bottom of bash file

Look at the second point


Copy this line


And paste it at the botttom of the bash file

Save it and Close the bash file.
Now we need to test the installed application
Open new terminal window To do this open up a new command terminal terminal


Let me drag this to the capture area

Type in the terminal window In the command terminal type 'icoFoam (Note that F here is capital) space -(dash) help


Press enter

A mesage in the command terminal A usage message will appear.

You are now ready to start with OpenFoam

Set up working directory Now let me show you how to set up a working directory.
Create a project or a user directory by the name run
New terminal window Open a new command terminal


Let me drag this to the capture area again

Terminal window : mkdir -p $FOAM_RUN In the Command Terminal type : mkdir (space) -p (space) $FOAM_RUN


(Please note FOAM and RUN are in capital)


Press Enter

Copy the tutorial directory Copy the tutorial directory from openfoam distribution to run directory
In terminal type : cp (space) -r (space) $FOAM_TUTORIALS (space) $FOAM_RUN By typing in the terminal

cp (space) -r (space) $FOAM_TUTORIALS (space) $FOAM_RUN


(Please note TUTORIAL and FOAM are in capital)


and Press Enter

Both the directories are now created.
To view the OpenFOAM directories For view the directories go to Places > Home Folder > OpenFOAM.
Ttt-210, click on it You can see ttt-210, Click on it
Click on run Run and tutorials
Close this


Now let me switch back to the slides.

Installation from source code If some errors occurs during downloading OpenFOAM and Paraview


form Synaptic Package Manager or Ubuntu Deb pack from website


then you can download and install Openfoam and paraview from the source pack installation

Download page of openfoam site Go to the Download page of openfoam website


Now let me zoom this

Scroll down and click on Source Pack Installation
Go to packs Now scroll down and Go to Packs
Download the two tar files Download these 2 tar files and save them
Go to your home directory After this go to your home directory
To do this go to Places > home folder


Let me drag this to the capture area

Create a folder


put this as abc

In your home directory create a folder by any name of your choice


Let me put this as abc



Copy the downloaded file in this folder Copy the downloaded files in the folder you just created.
To do this , copy these two tar file


And paste it into the folder you just created

Unzip or Untar these two files in the same folder.


Right click > Extract here, this make take a couple of minutes

Open new terminal window


In this go to your home folder

After this open a new command terminal


In this go to your home folder

type ls and press enter
Now go to the same folder where you have untared the two tar files
Type abc Now type cd ( space ) abc and press enter.
To view the contents inside abc type ls and press enter
Go to the downlaod page Now go back to the Download page of OpenFOAM website


for source pack installation

Follow the steps given on the website Follow the steps given below for ubuntu distribution


for OpenFOAM and Paraview

Compile OpenFOAM and Paraview We need to compile OpenFOAM and Paraview here
It may take about 4 to 5 hours but this method always works .



Slide 9 :

Diagram

Let us see how to Solve a problem in OpenFOAM with an example
Let me take “Lid Driven Cavity” as an example.
Upper plate moves with a velocity and other plates are fixed It is a 2D problem where the upper plate moves with a certain velocity and


other three sides of the plate are fixed

Slide : Solver icoFoam The type of Solver I am using here is for incompressible flow


Called as -icofoam

Open a command terminal Now Open a new command terminal again


Let me drag this to the capture area

Path for lid driven cavity Type the path for the lid driven cavity problem
Already set up in openfoam Note that this problem has already been set up in OpenFOAM
In terminal window type run


run directory

in the command terminal Type 'run'


This will direct you to the run directory of OpenFOAM


-Press Enter

Type cd tutorials Now type cd (space) tutorial (Press Enter)
Type cd incompressible cd (space) incompressible (Press Enter)
Type cd icoFoam cd (space) icoFoam (Note that F here is capital) (Press Enter)
Type cd cavity cd (space) cavity (Press Enter)
Type ls To view the content inside cavity type ls and press enter
See the three folders You can see three files : 0,constant and system
Now we need to mesh the geometry
Meshing using blockMesh Meshing can be done blockMesh utility of OpenFOAM
In the terminal window type :

blockMesh

In the terminal window type blockMesh


(Note here that M is capital)


and Press Enter

Meshing has been done
In terminal window type :

icoFoam

Now run the solver 'icoFoam' by typing in the terminal

icoFoam


(Note here that F is capital)


and Press Enter.

Look at the terminal window The iterations running can be seen in the terminal window
Solving is done Here we notice we have completed the solving point.
To visualise these results let us open the paraview window.
In the terminal window type : paraFoam To open paraView, type “paraFoam” in the terminal.


(Note that 'F' is capital here)


and press Enter

This open the paraview window



Left hand side in object inspector menu


Click APPLY

On the left hand side,


In the object inspector menu,


Click Apply to view the geometry

You can see the Lid Driven Cavity
Boundary condition


Go to mesh parts

To see the boundary conditions, scroll down the object inspector menu


and go to Mesh Parts

Uncheck the internal mesh box Uncheck Internel Mesh and click Apply
The geometry disappear.
View the moving and fixed walls Now for viewing the moving and fixedwalls


Check both the boxes and click Apply

Check and uncheck the boxes Now uncheck the Moving wall checkbox and click Apply
Hover over the paraview window You can now see the fixedwalls and the moving wall which just now disappeared.
Thus we are done with running openfoam and paraview
In future we will come across more tutorials on solvers and post- procesing the OpenFOAM result
Let me switch back to the slide
Slide : Summary In this tutorial we learnt how to install:


OpenFOAM and Paraview through Synaptic Package Manager and the website

solved a lid driven cavity.

Slide : Assignment As as Assignment,

install OpenFOAM and Paraview

This brings us to the end of the tutorial

Slide 8:

About Spoken tutorials

Watch the video available at this URL:

http://spoken-tutorial.org/What_is_a_Spoken_Tutorial

It summarizes the Spoken Tutorial project.

If you do not have good bandwidth, you can download and watch it.

Slide 9:

About Spoken tutorials

The Spoken Tutorial Project Team

-Conducts workshops using spoken tutorials

-Gives certificates to those who pass an online test

-For more details, please write to

contact@spoken-tutorial.com

Slide 10:

Acknowledgement

Spoken Tutorials are part of Talk to a Teacher project,

It is supported by the National Mission on Education through ICT, MHRD, Government of India.

More information on the same is available at the following URL link http://spoken-tutorial.org/NMEICT-Intro

About the contributor This is Rahul Joshi from IIT BOMBAY signing off.

Thanks for joining.

Contributors and Content Editors

Chandrika, Rahuljoshi

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