In this simulation, the Coupled Flow model is controlled by the Coupled Implicit solver. This solver enables the local iteration step to be adjusted in terms of the Courant number. The default value of 5 is quite conservative for a low Mach number problem on a mesh of reasonable quality, so it can be increased to speed convergence.
This is sufficiently low for the flow field to become established. After 100 iterations the Courant number will be increased further to allow a converged solution to be reached more rapidly.
All necessary material properties, boundary conditions, field functions and solver parameters for this tutorial have been applied, so the simulation can now be run.
