OpenFOAM/C2/Installing-Running/English

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Tutorial; Installing and Running OpenFOAM


Script and Narration : Rahul Joshi


Keywords: Video tutorial,CFD.


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


It is an Open Source


Computational Fluid Dynamics Software.


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


Type your password.


In the Search Box type OpenFOAM


you can see openfoam as well as 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



Demo and slide 8:


Alternately you can also install OpenFOAM and paraView from openfoam website on this url: http://www.openfoam.com/download


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


Let me zom this


Go to Ubuntu deb pack installation


Click on it


Let me zoom out


Scroll down

Demo From the first point of installation copy the command line and paste it in the terminal window.


To open up a the terminal window press Ctrl,Alt and t keys simultaneously on your keyboard

or

go to Application > Accessories > Terminal


Open up a terminal window


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


Note that in place of 'lsb_release -cs' replace it with the name of Linux version you are using.


Switch back to the browser


Above installation you can see different ubuntu versions and the code names,


as i am using Linux 10.04 i will replace lbs_release -cs by lucid.


Open up a terminal window


I will replace this by lucid


Press enter


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.



Demo:

Configure the software and test its working

Now we need to configure the installed software


To do this we need to edit the bash file.


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.


Now switch back to the browser


Scroll down and go to user configration


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.


To do this open up a new command terminal terminal


Let me drag this to the capture area


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


Press enter


A usage message will appear.


You are now ready to start with openFoam



Demo:

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.


Open a new command terminal.


Let me drag this to the capture area again


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 from openfoam distribution to run directory:

By typing in the terminal 'cp (space) -r (space) $FOAM_TUTORIALS (space) $FOAM_RUN ' (Press Enter)


(Please note TUTORIAL and FOAM are in capital)


Both the directories are now created.


For view the directories go to Places > Home Folder > OpenFOAM.


You can see ttt-210, Click on it


Run and tutorials


Close this


Now let me switch back to the slides.



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:


For source pack installation


Go to the Download page of openfoam website


Now let me zoom this


Scroll down and click on Source Pack Installation


Now scroll down and Go to Packs


Download these 2 tar files and save them.


I have already downloaded and saved these tar file


After this go to your home directory


To do this go to Places > home folder


Let me drag this to the capture area


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


Let me put this as abc


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.


Extract here, this make take a couple of minutes


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


Now type cd space abc and press enter.


To view the contents inside abc type ls and press enter


Now go back to the Download page of OpenFOAM website


for source pack installation


Follow the steps given below for ubuntu distribution for 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.


It is a 2D problem where the upper plate moves with a certain velocity a


and other three sides of the plate are fixed.

Display Slide 10 : The type of Solver I am using here is for incompressible flow


Called as -icofoam



Demo:

Running the first example in openfoam

Now Open a new command terminal again


Let me drag this to the capture area


Type the path for the lid driven cavity problem


Note that this problem has already been set up in OpenFOAM


in the command terminal Type 'run'.


This will direct you to the run directory of OpenFOAM -Press Enter


Now type cd (space) tutorial (Press Enter)

cd (space) incompressible (Press Enter)

cd (space) icoFoam (Note that F here is capital) (Press Enter)

cd (space) cavity (Press Enter)


To view the content inside cavity type ls and press enter


You can see three files : 0,constant and system.


Now we need to mesh the geometry


Meshing can be done blockMesh utility of OpenFOAM


In the \ terminal window type blockMesh (Note here that M is capital)

(Press Enter)


Meshing has been done


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

(Note here that F is capital) and Press Enter.

Demo:

Using paraView

The iterations running can be seen in the terminal window.


Here we notice we have completed the solving point.


To visualise these results let us open the paraview window.


To open paraView, type “paraFoam” in the terminal.

(Note that 'F' is capital here) and press Enter


This open the paraview window


On the left hand side,


In the object inspector menu,


Click Apply to view the geometry.


You can see the Lid Driven Cavity


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


and go to Mesh Parts:


Uncheck Internel Mesh and click Apply


The geometry disappear.


Now for viewing the moving and fixedwalls


Check both the boxes and click Apply


Now uncheck the Moving wall checkbox and click Apply


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 results


Let me switch back to the slides



Slide 11:

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 12:

Assignment

As as Assignment,

install OpenFOAM and Paraview

This brings us to the end of the tutorial

Slide 13 & 14 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.


Acknowde...left

Slide 15

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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