Simcenter STAR-CCM+ What is Continuity Initialization ?

Continuity Initialization:

• Continuity Initialization is available since Simcenter STAR-CCM+ v8.06
• The option solves the frictionless Euler equations to provide a better initial flow field for Pressure and Velocity fields 
• The improvement of the initial conditions due to this kind of initialization helps to accelerate the convergence of the solution and reduce overall turnaround time
• Provides a better initial guess of the flow field that is solved using either Segregated/Coupled solver.
• The option is strictly available for steady states cases
• It is similar/derived from Grid Sequencing Initialization (GSI) for the coupled solver

This option is available under Solvers > Segregated Flow ( Please see the below image)


Boundary Layer Initialization:

• In the latest version Boundary Layer Initialization has been introduced which uses the Velocity field from Continuity initialization to calculate the initial-field for Turbulence quantities such as Turbulent Kinetic Energy and Turbulent Viscosity (should accelerate convergence and reduce overall iterations required for steady state result)

This option is available under Solvers > K-Epsilon/K-Omega Turbulence ( Please see the below image)


The image below shows pressure after initialization:



  The image below shows pressure after Continuity initialization activated: