Hydrodynamics

• Potential flow models
  • Lifting-line method
  • Incorporates polar section evaluation
  • Cavitation model
  • Spray drag model
  • End-plating models and free-surface approximation
  • Local wave orbital velocity influence
• Section shape model
  • Inviscid pressure calculation
  • Automated XFoil polar generation
  • External data surface evaluation (e.g. RANS section data)
• Structural model
  • Euler beam-bending/twist model
  • Full FSI coupling to potential flow models

Design

• Spline-based GUI foil editor for any foil configuration
• Section shape editor with live pressure plot
• Single element sections, or foils with flaps
• Define ‘rondure’ (front-view) foil spline reference line
• Define and edit cross-sectional properties as function of rondure position:
  • Section shape; live inviscid pressure distribution
  • Polar coefficients (can be determined automatically)
  • Chord, offset, twist
  • EI, GJ, shear-centre (can be estimated)

Reporting

• Overall lift and drag, broken down by component
• 6-DOF forces and moments
• Lift and drag distributions along span
• Sectional pressure distributions
• Cavitation margin
• Bending moment and shear stress along span
• Peak strains
• Deformation and twist along span