Dynaflow, Inc.

- Viscous Module

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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.

  • Cartesian and curvilinear coordinate systems
  • Multi-block structured grids and overset grids for complicated geometry problem
  • Dynamics grid for moving objects
  • Level Set Method for cavities and free surface flows
  • Turbulence models including an LES model 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

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