Computational Fluid Dynamics in Ship Maneuvering Analysis

Computational Fluid Dynamics (CFD) has become an indispensable tool for understanding and predicting the manoeuvring behaviour of ships. By numerically solving the governing equations of fluid flow around a vessel hull, CFD enables detailed characterisation of forces and moments under a wide range of operating conditions. Modern approaches employ unsteady formulations to capture transient phenomena such as vortex shedding, propeller–hull interaction and rudder wake dynamics. High-fidelity models integrate virtual captive model tests and dynamic overset grids to allow the hull to move freely in six degrees of freedom (6DOF), thereby simulating realistic turning, zigzag and approach manoeuvres. Advances in solver technology and computational power now permit extensive parametric studies, covering variations in water depth, current speed and vessel loading. These capabilities have supported more accurate determination of hydrodynamic derivatives, informed the calibration of empirical prediction methods and underpinned the development of standardised manoeuvring models. The global significance of CFD in ship design and operational safety is evident in its application to port approach optimisation, risk assessment in confined waters and reduction of environmental impact through improved energy efficiency. Coupling CFD outputs with control-system models further extends its role into autonomous navigation and decision support systems, paving the way for smarter and safer maritime operations.

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Computational Fluid Dynamics in Ship Maneuvering Analysis publication trend

The graph below shows the total number of articles in computational fluid dynamics in ship maneuvering analysis across all publications each year (not limited to Nature Index journals).

Technical terms

Computational Fluid Dynamics (CFD): A numerical method for solving fluid flow equations around complex geometries, used to predict hydrodynamic forces and moments on ship hulls.

Unsteady Reynolds-Averaged Navier–Stokes (URANS): A formulation of the Navier–Stokes equations that averages turbulent fluctuations over time while retaining unsteady flow features essential for manoeuvring simulation.

Overset Grid Method: A dynamic meshing technique in which multiple overlapping grids move relative to one another, allowing simulation of fully flexible hull and appendage motion in 6DOF.

Virtual Captive Model Test: A numerical analogue of a physical captive model experiment in which the ship hull is held at prescribed motions to extract hydrodynamic derivatives.

Hydrodynamic Derivatives: Coefficients quantifying the change in fluid forces and moments with respect to variations in velocity, angular rates and control-surface deflections, fundamental to manoeuvring models.

Six Degrees of Freedom (6DOF): The complete set of translational and rotational motions (surge, sway, heave, roll, pitch and yaw) that a vessel can experience during manoeuvring.

References

1. Hydrodynamic analysis of ship manoeuvrability in shallow water using high-fidelity URANS computations. Applied Ocean Research (2022).
2. A high-fidelity CFD-based model for the prediction of ship manoeuvrability in currents. Ocean Engineering (2022).
3. Assessment of the Manoeuvrability Characteristics of a Twin Shaft Naval Vessel Using an Open-Source CFD Code. Journal of Marine Science and Engineering (2021).