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- Wave spectrum
- Wind spectrum
- Vessel properties
- Properties of mooring lines
(linear and non-linear composite, clump-weights and
buoys, polynomial description of steel-wire cables up to
5th order, pulleys and winch-lines and
constant-force cables)
- Fenders (directional,
fixed-directional and floating and friction and damping)
-
DP
properties
AQWA is a computer
program consisting of a set of modules, which all have a
different application. They all work together under “AQWA
Graphical Supervisor”. The table above gives a short
overview of the area covered by each module.
There are two more
modules not mentioned in the figure above:
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AQWA-Tether:
coupled TLP-Tendon analysis including stress and fatigue
and towed tethers.
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AQWA-Solar:
motions and load-time-histories using high-order
Morison-equations.
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AQWA-Float
and AQWA-Launch: Modelling of launching and
floating of jacket structures
-
AQWA-Offshore:
designing and analysing floating structures such as
FPSO’s, Spars, Semi-Submersibles, TLP’s and Truss-Spars.
Licensing:
Contact Century Dynamics for licensing
Documentation and support:
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Clear and easy to reference manuals.
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Hotline telephone, fax and e-mail support by experienced
engineers.
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Ongoing research and development for future program
releases.
Computer
systems:
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PC (IBM compatible).
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Runs under Windows NT 4.0/Windows 2000
Professional/Windows XP Professional
Postprocessor output:
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Computer animations of vessel motions and hydrodynamic
interaction between floating bodies
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Bending moment and shear force calculation including
forward speed
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Splitting force calculation
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Output in Excel
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Automatic generation of a mesh from offsets
-
Output of full QTF matrix including second-order terms
for diffraction and radiation
-
Possibility to incorporate FEMGV, a finite element model
generator.
Solution:
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Transformations (time-history to frequency domain and
vice versa, time history filter and analysis, integral
transformations, statistical analysis, algebraic
functions and combinations)
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Function processing of wave spectrum: (cross swell)
spectral density, spectral wavelets, surface-time
history, -elevation and -pressure
-
Time history of wave-elevation and wind velocity
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Near Field and Far Field solutions for second order
drift forces
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Drag forces for small structures can be calculated as
Morison elements; diffracting and Morison elements can
be put in one model
-
Stokes second order wave theory
-
Green’s functions for diffraction and radiation analysis

Loading:
-
Wind load of any spectrum (OCIN, APIR or user defined)
-
Wave-load of any spectrum and from diffraction and
radiation (regular and irregular, defined by JONSWAP,
Pierson-Moskowitz or user defined)
-
Drift forces
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Thruster loads
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Shallow water effects
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Current loads of any spectrum
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Full hydrodynamic interaction between bodies
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Non-linear hydrodynamic effects
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