Low Mach Number Local Preconditioning for Unsteady Viscous Finite Volumes Simulations on 3D Unstructured Grids

This paper presents a density-based finite volumes method for solving the unsteady Navier-Stokes equations on 3D unstructured grids. The second order Crank-Nicolson scheme is applied to perform the time integration. At each time step, the system of non linear equations is solved by means of a fully implicit dual time stepping method. An...