Computational Fluid Dynamics For Beginners

Basic Of OpenFOAM

After proper installation go to your OpenFOAM directory(folder).
In OpenFOAM directory you will see their a number of directories are there.
To understand the functionality of OpenFOAM we have to understand the functionality of each directory.
First go to the tutorials directory and there are also many directories present inside it like basic,heat transfer,incompressible.These are the cases we want to solve for like we want to solve for incompressible fluid so wwe chose incompressible directory.
In incompressible directory there are many other directories are there which are thee cases for the incompressible fluid or these are the solvers for different cases for incompressible fluids.
Lets chose icoFoam it is used to solve for laminar case of incompressible fluid
Each directory contains three directory inside it these are 0 ,constant and system

0 directory:- contains the initial and boundary conditions of different parameters like pressure and velocity
constant directory :- it contains the geometry of the shape we are solving for and the transport properties of fluid that remains constant for the simulation time
System directory:- it mainly contain 4 files named as blockmeshDict,controlDict,fvSchemes and fvSolutions

here bllockmesh is used to mesh the geometry to solve by the FVM method
controlDict contains the informations about the timing of simulations
fvSchemes and fvSolutions are used as an solvers for the given conditions here in fvschemes and fvSolutions many name as Eular,Guass linear solving techniques are given read more about to know how solutions are find for different cases.

In main directory of OpenFOAM contains another directory named as src which contains all the source code for the different solvers are being used in the solutions of different cases.
You can study the codes and know more about how the solution is done by different methods.

So here we stopped today.Next we will start from the working and different cases in OpenFOAM.