Courant Fort

What is Courant Fort?

The Courant–Friedrichs–Lewy (CFL) condition, often called the Courant number or Courant–Friedrichs number, is a condition for stability while solving certain partial differential equations (PDEs) numerically by finite difference methods. It arises in the numerical solution of hyperbolic PDEs, and it essentially states that the distance that any information travels during the timestep duration must be less than the distance between mesh points. In simpler terms, the Courant number is a ratio that relates the time step size to the spatial step size and the wave speed of the physical system being simulated. The Courant number determines the stability and accuracy of the numerical solution. If the Courant number is too large, the numerical solution may become unstable or inaccurate. Courant Fort is not a recognized technology, it is likely a typo and refers to the Courant number used in the context of FORTRAN programming for scientific computing.