hydrostar software capabilities
DESCRIPTION
Hydrostar Software CapabilitiesTRANSCRIPT
BUREAU VERITAS - MARINE & OFFSHORE DIVISION - RESEARCH DEPARTMENT
HydroStar Veristar Family Software
HydroSTAR is an advanced hydrodynamic software. It benefits from more
than 25 years of development and is continuously updated and improved
to raise technological challenges. HydroSTAR has been extensively tested
and validated through comparison with semi-analytical studies, numerical
results from recognized tools and experimental data.
SEA-KEEPING ANALYSIS SOFTWARE
Hybrid Diffraction / Morison model
Theoretical basis
• Fairly perfect fluid (dissipation introduction)
• First-order and second-order potential theory
• 3D Boundary element method (panel method)
• Most efficient algorithms for associated Green functions
• Deep water and finite-depth water
• Encounter frequency approximation for forward speed
• Frequency domain
Main inputs
• Hull geometry represented by flat panels
• CoG and mass distribution associated with loading conditions
• Wave data defined by frequencies, headings and amplitudes
• Additional viscous damping, inertial and stiffness matrices
• Forward speed
Main outputs
• Automatic cut of full mesh according to loading conditions
• Added Mass and wave-making Damping
• Motion, velocity and acceleration at any point of floating bodies
• Wave pressure distribution and detail components
• Wave elevations around bodies
• Hull Girder Loads RAOs
• Wave mean drift loading
• Full Quadratic Transfer Function (QTF at low and high frequencies)
• Video animations of waves/pressures/bodies’ motions
• Short term and long term statistics
• Advanced design waves
Operability polar from the spectral
module
Pressure on the hull and wave field
around the ship
Mesh generated by AMG (mesh module included in HydroStar)
BUREAU VERI BUREAU VERITAS - MARINE & OFFSHORE DIVISION - RESEARCH DEPARTMENT
HydroStar
Contacts:
General [email protected]
Asia Pacific [email protected]
Brazil [email protected]
China [email protected]
Korea [email protected]
HydroStar deals with side-by-side configuration as it handles multi-body
interactions. Moreover, it benefits from an efficient way to introduce fluid
dissipation which is critically important to get realistic prediction of resonance in
the gap between two ships. The whole method has been validated through
model tests.
Dynamic coupling between liquid motions in internal tanks and the ship motions
is handled by HydroStar. This is particularly important for LNG-FPSO and
FSRU whose motions are significantly modified by the coupling effect.
Generalized modes calculation: HydroStar is able to solve the hydro-dynamic
problem on user defined modes. This is a crucial step towards hydro-elastic
calculation (see Bureau Veritas hydro-structure tool Homer2).
Hydro-Structure
software Homer2
HydroSTAR is conceived to enhance
technical excellence and productivity.
It brings together numerous
advantages and functionalities to meet
high-level requirements:
• 1st order (Linear) and 2
nd order
radiation/diffraction (3D BEM)
• Introduction of fluid dissipation
effect with calibrated coefficients
• Middle-field formulation for
accurate computations of second-
order loads
• Second order loads in multi-
directional waves
• Mixed Panel (Diffraction) / Stick
(Morison) model accounting
nonlinear drag forces
• Springing analysis (generalized
mode capability)
• Wave-current interaction to
evaluate wave drift damping
• Multi-body interactions with
different mechanic connections
• Comprehensive spectral analysis
including short/long term
predictions, operability criteria,
advanced equivalent design
waves, etc
• Air gap analysis, green water &
slamming occurrence estimation
• Dynamic effects of liquid motion in
tanks
• Account for resonant effects of
moonpool with viscous dissipation
• Forward speed (encounter
frequency approximation)
• Account for confining effect of
side wall in wave tanks
• Fluid kinematics, vessel motion
and dynamic pressure animation
• Automatic Mesh Generator for
most conventional geometry /
mesh cutting following loading
conditions
• Fast calculations with efficient
algorithms
• Multi-threaded (MPI) to reduce
computation time
HydroStar is supported by teams of experienced engineers and
developers who use the software daily. Local technical teams are set
around the world in order to provide you with the most adapted services.