System folder in OpenFOAM

The #system #folder is a crucial component within an #OpenFOAM case #directory. It houses files that dictate how the #Computational #Fluid #Dynamics (#CFD) simulation will be solved www.openfoam.c....
Here's a breakdown of the system folder's role in OpenFOAM simulations:
Contains Solution Control Parameters: This folder stores text files that define various aspects of how OpenFOAM solves the equations. These files don't involve the geometry or physical properties themselves, but rather how the solver approaches them.
Mandatory Files: There are at least three mandatory files you'll find in the system directory:
controlDict: This file sets up core parameters for the simulation run, including start and end time, time step size, and data output controls.
fvSchemes: This file specifies the discretization schemes used within the finite volume method for solving the governing equations.
fvSolution: This file defines the equation solvers, tolerances, and other algorithmic controls employed during the simulation.
Optional Files: The system directory can also hold additional files depending on your specific needs. For instance, if you're using the blockMesh tool to generate the mesh, you'll have a blockMeshDict file detailing the meshing parameters. Similarly, additional files might control post-processing activities.