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CFD hull resistance simulation of a cargo ship showing pressure contours at the bulbous bow and free-surface wave pattern
SECTORS / 06 — MARINE

Resistance, propulsion and cavitation from a shipyard portfolio.

Hull resistance, aerodynamic load and cavitation studies from a portfolio built next to a major marine industry. Efficiency regulation has turned hydrodynamic performance into a compliance question, not just a commercial one.

BRIEF Read the MARINE sector brief
01 — SECTOR NEEDS

What this sector needs from CFD

Every percent of resistance shows up in fuel and in efficiency indices, so the sector needs free-surface simulation trustworthy enough to guide hull and propulsor decisions between model tests.

Free-surface resistance Wave-making and viscous resistance decomposition at design and off-design draughts, trim and speed combinations.
Propulsor performance Open-water and behind-hull propeller behaviour, wake field quality and hull-propeller-rudder interaction.
Cavitation prediction Sheet, tip-vortex and erosive cavitation identification, with the pressure-pulse consequences for noise and vibration.
Seakeeping and added resistance Motion response and added resistance in waves, increasingly required for realistic operational-profile assessment.
Above-water aerodynamics Wind loads on superstructures, containers and offshore topsides, plus exhaust and helideck flow conditions.
02 — REPRESENTATIVE CASES

Typical studies we run

06 CASE TYPES
01

Hull resistance and trim optimisation

Calm-water resistance across the speed range with sinkage and trim free, ranking hull form and appendage variants.

Resistance curve Wave pattern Optimal trim
02

Energy saving devices

Ducts, fins and pre-swirl stators assessed for real gain behind the hull rather than in isolation.

Power saving Wake uniformity
03

Propeller and cavitation study

Behind-hull propeller loading and cavitation extent, with pressure pulses transmitted to the hull structure.

Cavitation extent Pressure pulses Thrust / torque
04

Appendage and rudder interaction

Rudder, shaft bracket and bilge keel flow, including gap cavitation and manoeuvring side force.

Side force Local pressure
05

Superstructure wind loads

Wind resistance and load coefficients for hulls, deck cargo and offshore topsides across heading angles.

Force coefficients Load maps
06

Exhaust and helideck flow

Funnel plume dispersion, downwash onto decks, and helideck turbulence and temperature-rise criteria.

Plume path Deck temperature rise
03 — POLICY & COMPLIANCE

Requirements verifiable through CFD

Simulation supports — and in several frameworks explicitly permits — demonstration of compliance. We agree the acceptance criteria and validation evidence with you and the approving body before the study begins.

IMO MEPC EEDI / EEXI
Ship energy efficiency indices
Attained index values depend on power at reference speed; CFD supports hull and propulsor improvement and the technical files behind the calculation.
ITTC recommended procedures
CFD verification and validation
Defines the grid-convergence, uncertainty and reporting practice we follow so results are comparable with model-basin data.
ISO 15016 / IMO speed trials
Speed and power trial analysis
Correction of trial results for wind, waves and current is supported by simulation of the same conditions.
IMO MSC.1/Circ.1533
Evacuation analysis for passenger ships
Advanced evacuation analysis, and smoke conditions affecting it, can be assessed with coupled simulation.
IGF Code / IGC Code
Gas-fuelled and gas carrier safety
Ventilation adequacy and gas dispersion in enclosed spaces, tank connection spaces and bunkering areas verified by CFD.

Chasing resistance or a cavitation problem?

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