PowerPoint Presentation

Assignment D:Hydrodynamic Load on ROV during RecoveryClandia Sim

Hydrodynamic Load on ROV during RecoveryRecognition of Sustainability

Recognition of Health, Hazard & Safety

The demand & sustainabilityRapid growth of offshore oil and gas developmentBetter understanding in hydrodynamics load is essential for design and operationReduces cost:Widen operation windowIncrease number of installation vesselsAvoid un-necessary equipmentIncrease level of safety

Traditional Method: DNV Guideline

Hydrostatics term

Inertia term (Submersed mass & added mass x water acceleration)

Damping term (Damping coefficient, water velocity & recovery velocity)

Simple Hydrostatics Calculation

Dynamic simulation software OrcaFlexMorisons EquationTime and cost saverDifferent wave theoryRegular/irregular wave

Experiment Testing

Winch Motor

Qualisys

1000N Load CellSafety bootsROV Model: 28.3kg> 30kg required a crane to liftAny works under the water required a technician who been certified to be doneDocumented experiment design and proceduresH&S rules is there to PROTECT you!It is your choice to take the risk!

Key Findings

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ConclusionLoading depend on:

Winch behavior

Geometry ShapeRecovery SpeedPhase Different

Respond DelayAcceleration/ DecelerationWave Height

Sustainable futureOrcaFlex modelBetter resultModification on the tracksModification on the winch

Future ResearchLarger modelMore number of speedsFocus only on Peak tension Slamming Slack of wire Pitch motionInterpolation to real life cases

Thank you very much Any Questions?