ARIANA-3 Dynamic 

              

 

Manufacturer: Bureau Veritas together with MCS, advanced engineering solutions.

Website: http://www.mcs.com/site.php?page=6&name=Ariane-3Dynamic

 

Data Input:

  • Easy to use graphical user interface (GUI) for model setup.
  • Composition and geometric data for each mooring line is input in individual customised windows.
  • Property data for each mooring line segment is also input in customised windows.
  • Line replication facility exists for generating multiple lines based on master line geometric and structural properties.
  • Input of tabulated load/excursion (characteristic) relationship for riser stiffness or other excursion dependent loads.
  • Thruster load input.

Applications:

 

  • Keeping FPSOs on station, either by single point, CALM, DICAS or spread mooring systems, including taut, semi-taut and catenary configuration
  • Offloading operations via conventional and full dynamically positioned tankers, with/without tug assistance
  • Keeping drilling units on station (semisubmersibles, barges, etc) via taut, semi-taut and catenary configurations
  • Connection of a floating unit (LNG tanker etc) to a fixed structure (wharf or platform) by means of a temporary or permanent mooring system
  • Installation procedures in difficult environments - complex seabed, presence of pipelines, wellheads.
Users:
  • Oil companies

  • Offshore engineering companies

  • Other commercial Offshore related companies
Computer systems:
  • PC (IBM compatible).
  • Runs in MS DOS environment or as DOS window.
  • Supports common printer configurations.
Postprocessor output:
  • Tabular output of equilibrium vessel position and associated line pretensions.
  • Tabular output of time/excursion history of vessel motion for time domain analysis and of motion statistics for frequency domain analysis.
  • Graphical time history plots of vessel excursions and line tensions.
  • Graphical output of mooring stiffness and of line profile showing end loads and touchdown position for specified excursion(s).
  • Graphical on-screen animation of vessel excursion with optional hardcopy.
  • Line dynamic analysis statistical output.
Solution:
  • Mooring stiffness based on catenary load/deflection relationship of the mooring system, together with user-specified load-excursion relationships.
  • Initial equilibrium and pretensions calculated by static force balance for mean static position of vessel.
  • Loaded equilibrium calculation facility for determining offset under mean loads.
  • Time domain solution calculates mean and second order motion timetrace of excursion in the time domain, with or without additional first order excursions.
  • Non-linear line stiffness modelling capability.
  • Separate automated cable element 3-D non-linear line dynamics simulation for most loaded line.
Modelling:
  • Non-linear mooring line stiffness, sloping seabed, thruster definition, buoy and sinker modelling and transient line failure simulation capabilities.
  • 3 or 6 degree of freedom first order vessel motions in addition to low frequency motions.
Loading:
  • Range of irregular (spectral) or regular wave conditions.
  • Constant wind velocity or spectral wind formulation.
  • OCIMF consistent current and wind coefficient input format.
  • Quadratic transfer function (QTF) definition of low frequency loads.
  • Thruster loads, constant or time-dependent directional.
  • User-definition of additional force-deflection relationships.
Summary:

ARIANE-3Dynamic is a mooring system analysis software package that is industry proven, approved by the NMD and recognized by Shell Standards for mooring analysis. The program represents state-of-the-art frequency and time domain dynamics in addition to quasi-static mooring analysis capability. The user-friendly input with multiple mooring line replication facility, unique capability for time domain prediction of moored vessel excursions and new automated 3D non-linear time domain dynamic analysis of the most loaded line makes ARIANE-3Dynamic the ideal tool for design and analysis of moored vessels.

Consistent with current dynamic analysis regulatory requirements (e.g. POSMOOR, API RP2SK, BV).