Boundary Conditions

  • Inlet velocity in terms of Cartesian or cylindrical-polar components, magnitude and direction, magnitude of normal/tangential components, or user-specified local coordinate components
  • Inlet velocity profile calculated as a pre-processor considering the mass or volumetric flow rate, slip coefficient and rheological behavior
  • Exit static pressure
  • Outflow, with specified flow rate weighting
  • Outflow (Vs = 0 and Fn = Cst)
  • Takeup force
  • Takeup velocity
  • Wall boundaries, with specification of:
    • Tangential wall velocity using Cartesian component form, rotation speed or local axis
    • Shear stress including slip conditions
    • Thermal boundary conditions using heat-flux, temperature or external convection, radiation (emissivity), mixed conditions or user-specified temperature profile
    • Rosseland correction
  • Moving boundaries (free surface and interface), with specification of:
    • Specified normal force
    • Specified normal velocity
    • Air drag force
    • Slipping along the interface between two fluids
    • Surface/interface tension
  • Symmetry, rotationally periodic and translationally periodic boundaries
  • Axis boundary conditions
  • Specified normal and/or tangential force in combination with normal and tangential velocity
  • Specified normal and/or tangential force in combination with normal and tangential displacement (FSI)
    • Vanishing velocity along the solid (FSI)
    • Partial slip along the solid (FSI)
    • Imposed nodal displacement (FSI)
    • Thermal interface between flowing and solid materials
    • Interface between Navier-Stokes and Darcy's law
    • Partial slip for laminar flow
      • Navier's law
      • Coulomb's friction (using UDF)
      • Threshold law
      • Asymptotic law
      • Arrhenius dependence with request to temperature
    • Partial slip (Navier's law) along moving parts (using the mesh superposition technique)
      • Contact detection
        • 2-D mechanical contact
        • 3-D mechanical contact
        • Heat transfer with the mold
        • Slip behavior along the contact wall (Navier's law)
        • FSI: stress calculation in the mold induced by parison contact
      • Periodic conditions
      • Transient conditions
      • Temperature programming for thermoforming
      • User-specified profile or map of boundary condition under CSV format
      • User-specified profile or map of initial condition under CSV format
      • Optimization of initial thickness map for blow molding application