If you're using Windows, you can still run OpenFOAM through WSL (Windows Subsystem for Linux).

Step 1: Install OpenFOAM via WSL

Follow the official step-by-step tutorial here (very clear and detailed):

https://openfoam.org/download/windows/

Step 2: Run OpenFOAM after Installation

Once you’ve completed all installation steps:

1. Open “Command Prompt” (CMD)

   You’ll see something like this:

   C:\\Users\\YourName>
   

2. Start WSL

   Type:

   wsl
   

3. Navigate to your run directory

   cd $FOAM_RUN
   

4. Source the OpenFOAM environment

   (adjust version if needed, e.g., openfoam10, openfoam2312, etc.)

   source /opt/openfoam12/etc/bashrc
   

5. Check if environment is working

   • To confirm the $FOAM_RUN path:

     echo $FOAM_RUN
     

   • To check your current directory:

     pwd
     

Step 3: Copy a Tutorial Case

Let’s copy a sample case (e.g., pitzDaily) into your working folder:

cp -r $FOAM_TUTORIALS/incompressible/pitzDaily .

Or another case:

cp -r $FOAM_TUTORIALS/potentialFoam/cylinder .

Step 4: Run the Simulation