9.2. How to run GASFLOW on Windows?

Step 1: Enable WSL on Windows

1.1. Open PowerShell as Administrator:

Press Win + X and select Windows Terminal (Admin) or PowerShell (Admin).

1.2. Install WSL:

Run the following command to enable WSL and install the default Ubuntu distribution:

wsl --install

• This command automatically installs WSL 2 and Ubuntu.

• If Ubuntu isn’t installed automatically, manually install it:

  wsl --install -d Ubuntu

1.3. Set WSL 2 as Default:

wsl --set-default-version 2

1.4. Restart your computer to apply changes.

Step 2: Launch and Configure Ubuntu

2.1. Open Ubuntu from the Start Menu.

• On first launch, set a username and password (independent of your Windows account).

2.2. Update the system:

sudo apt update && sudo apt upgrade -y

Step 3: Install CFD Dependencies

Install essential tools and libraries for GASFLOW-MPI:

sudo apt install -y build-essential gfortran openmpi-bin libopenmpi-dev

• build-essential: Compilers (GCC, G++).

• openmpi-bin: MPI runtime for parallel computing.

• libopenmpi-dev: MPI development headers.