- Size:1CD
- Language:english
- Platform:Win7/WIN10
- Freshtime:2020-10-28
- Search:Orcaflex 11 download Orcaflex 11 crack Orcaflex 11 tutorials
Description
Orcaflex 11
Summary of key features
- 3D, nonlinear, large displacement analysis
- Fully coupled tension, bending & torsion
- Accurate, efficient and proven FE formulation
- Robust line compression / snatch modelling
- External line-on-line clash & sliding contact
- Internal line-in-line impact & sliding contact
- Modelling of post-contact behaviour
- Linear & nonlinear elastic contact stiffness
- Line slug flow and free-flooding effects
- Nonlinear time domain (implicit & explicit)
- Linear frequency domain (1st & 2nd order)
- Quasi-dynamic analysis
- Constraints to fix or impose individual DoFs
- Line feeding (haul in and pay out nodes)
- Fully coupled vessel – line analysis
- Comprehensive vessel load modelling
- Multi-body hydrodynamic coupling
- Full sum and full difference QTFs
- Vessel wave shielding (sea state RAOs)
- Water entry & exit slam loads
- Full description of wind, wave and current
- Flat, 2D or 3D seabed profile
- Linear elastic, non-linear hysteretic & P-y soil
- Binary and / or text input files
- Fatigue analysis
- Extreme value statistics
- Modal analysis
- VIV and interference analysis
- Pipelay and riser code checks
- Comprehensive range of automation tools
- Complete Matlab, Python & DLL interfaces
- Parallel processing (at no extra cost)
- Batch processing for volume analyses
- Distributed OrcaFlex optimises multi-licence use
- Full GUI with wire frame and shaded views
Modelling objects
A wide range of objects, each very powerful, easily allows simple or complex models to be built
LINES
- Fully coupled bending, torsion and axial stiffness
- Bend Stiffener / Tapered Stress Joint model generation
- Pre-bend can be modelled (e.g. spool pieces) now with visualisation tool
- Centrifugal and Coriolis internal flow effects included
- Slug flow and free flooding options for line contents
- Multiple coatings and linings can be defined
- Equivalent pipe setup tool
- Bending stiffness, drag and added mass can be non-isotropic
- Axial, bending and torsional stiffness can be nonlinear
- 3D hysteresis model available for bending
- Rayleigh damping with or without geometric stiffness
- Line CofG may be displaced from geometric centre
- Clumped line attachments, drag chains or flex joints
- Non-isotropic Coulomb friction with seabed & elastic solids
- Line Clashing for external clash modelling between lines
- Line Contact for pipe-in-pipe, piggybacks, J-tube pulls, bend stiffeners, sliding connections, etc., allowing smooth modelling of large relative axial motion including friction
- Hydrodynamic, aerodynamic and user-defined applied loads
- Wake Interference (Huse, Blevins,user specified)
- Partially submerged lines (eg, floating hoses) handled robustly
- Line drag and lift coeffs can vary with Re or seabed proximity
- Added mass as a function of submergence or height above seabed
- Water entry / exit slam loads (per DNV H103, RP-C205)
- Compressibility specified by bulk modulus
- Choice of finite element or analytic catenary representation
VESSELS
- Imposed vessel displacements:
- first order displacement RAOs
- prescribed and / or harmonic motion
- time history motion files
- externally calculated
- Loads for calculated vessel motions:
- first order load RAOs
- applied loads (thrusters, ice, etc.)
- 2nd order (low freq.) difference QTFs: full and Newman
- 2nd order (high freq.) sum QTFs
- wave drift damping
- added mass and damping with convolution
- 6DoF ‘other’ linear and quadratic damping
- manoeuvring, current and wind loads
- drag from attached Morison elements
- loads from attached lines (coupled analysis)
- Multi-body hydrodynamic coupling between floaters
- Sea state RAOs (vessel wave shielding, wave jetting, etc)
BUOYS
- Full 3D and 6D modelling of buoys
- Lumped option with overall properties
- SPAR option for co-axial cylinders, each with own properties
- Fluid loads calculated based on the instantaneous wetted surface
- Added mass as a function of submergence
- Water entry / exit slam loads (per DNV H103, RP-C205)
- Wings for lifting surfaces
- User-defined imposed loads
- Compressibility specified by bulk modulus
- Coulomb friction with seabed and elastic solids
SHAPES
- Many features to model boundary surfaces and to control lines
- Shapes with friction for line & buoy contact
- Plane, cuboid, cylinder (solid/hollow), & bellmouth options
- Trapped water option for moonpool modelling
- Drawing option for visualisation purposes
WINCHES
- Winches with several length or tension control options
LINKS
- Links (springs) with linear or nonlinear stiffness & damping
CONSTRAINTS
- Allow individual degrees of freedom for other objects to be constrained
- Imposed motion via time history or externally calculated
TURBINES
- Dedicated horizontal-axis turbine object
- Aerodynamic loading via Blade Element Momentum (BEM) model
- Blades modelled with beam elements (similar to lines)
- Prandtl tip and hub loss models
- Pitt and Peters skewed wake model
- Blade pitch control via external function
- Generator control options (constant or externally calculated)
- Example Python controllers available (including Bladed type DLL wrapper)
Environmental description
Many options to apply environmental loads
SEA
- User-defined water density, kinematic viscosity, temperature
- User-defined horizontal and vertical density variation
- Temperature can be constant or vary with depth
- Kinematic viscosity can be constant or vary with temperature
SEABED
- Horizontal, sloping, 2D or 3D seabed surface (smooth or linear)
- Choice of soil models:
- linear elastic
- nonlinear hysteretic (trenching, suction & re-penetration)
- P-y models (API RP 2A soft clay & sand & user-defined) for vertical and near-vertical line penetration
- Non-isotropic Coulomb friction in both statics & dynamics
WIND
- User-defined air density
- Wind velocity can be constant, or API or DNV spectra
- Wind can also be a time history file of speed and direction
- Vertical variation factor specified as a profile
- Full field wind (varies with both space & time)
WAVES
- Regular: Airy, Stokes’ 5th, Dean Stream Function, Cnoidal
- Irregular: ISSC, JONSWAP, Ochi-Hubble, Torsethaugen, Gaussian swell, user-defined, Time History
- Multiple wave trains for combination sea states
- Fluid stretching (Wheeler, kinematic or extrapolation)
- Irregular waves have directional wave spreading option
- Preview and selection of irregular wave profile
- Wave kinematics choice (with individual specification for 3D & 6D buoys and lines):
- Exact (all nodes/buoys, every time step)
- Grid interpolation at instantaneous object positions
- Calculation at object static positions only
- Various wave spectrum discretisation methods:
- equal-energy (user-defined bounds & interval) – the default
- equal spacing (arithmetic progression)
- geometric progression
CURRENT
- 3D, non-linear
- Both magnitude and direction can be time varying
- Horizontal variation factor on magnitude