The 3DynaFS ^© viscous module solves the incompressible Navier-Stokes equations using an artificial compressibility method. The solution procedure can be marched in pseudo-time to reach a steady-state solution or can use a dual time-stepping scheme to obtain a time-dependent solution. The code uses a first-order Euler implicit time-difference scheme, a third-order accurate flux-difference upwind splitting scheme for convection terms, and a second-order central differencing for the viscous terms.

Main features of 3DynaFS-Vis^© are:

• Cartesian and curvilinear coordinate systems
• Multi-block structured grids and overset grids for complicated geometry problem
• Dynamic grid for moving and/or deforming objects
• Level Set method for cavities and free surface flows
• Turbulence models including RaNS, LES and DES models for turbulent flows
• Unsteady Reynolds Averaged Navier Stokes (UnRANS) and Direct Navier Stokes Solution (DNSS)
• Viscoelastic models for non-Newtonian flows
• Overset grids
• Parallelization with MPI and OpenMP

Ship waves simulated with Level Set method.	Plunging jet simulated with Level Set method.

3DynaFS-Vis^© can be coupled with the Lagrangian bubble tracking module, 3DynaFS-Dsm^©, to simulate two-phase bubbly flows which can be occur in many industrial, marine, chemical, energy and other applications.

3DynaFS-Vis^© can be coupled with the potential flow solver 3DynaFS-Bem^© to model for example the dynamics of thick-shelled micro-bubbles and study shell breakup mechanism. The flow in the thick viscous shell layer is solved using 3DynaFS-Vis^© , while 3DynaFS-Bem^© allows modeling complicated boundary geometries and addresses non-spherical deformations.

 

• 3DynaFS-Bem^© - Boundary Element Module
• 3DynaFS-Comp^© - Compressible Module
• 3DynaFS-Dsm^© - Discrete Singularity Module
• 3DynaFS-Fsi^© - Fluid Structure Interaction Module