Hull line optimisation for ship design and modification

Hull line optimisation using Computational Fluid Dynamics (CFD) is relevant when a vessel design requires changes to the flow around the hull, the inflow conditions to the propeller, or wave-making. It is used in ship design and ship modification when hull geometry must be refined for the vessel's intended operation. 

Operational need 

The need typically arises when a vessel operates under a single condition or across multiple speeds and loading conditions. Without a structured optimisation process based on CFD calculations, it becomes difficult to assess hull changes against the intended operating profile and the design limits. Hull optimisation supports further design work by clarifying which hull changes should be taken forward. The service is part of our expertise area Maritime and offshore engineering.

One design point can limit the optimisation result 

When optimisation is carried out for only one condition or a narrow speed range, the result can be less useful for vessels that operate across a broader profile. This makes it harder to judge whether the hull form remains suitable outside the selected design point. 

Several operating conditions are difficult to track 

Vessels operating at different speeds and loading conditions require a broader overview of how hull forms perform. In a traditional optimisation process, this becomes difficult to manage, especially when design constraints must also be respected throughout the work. 

Flow changes affect several performance factors at once 

Changes to hull geometry influence the flow around the hull, wake properties, inflow to the propeller and wave-making. If these effects are not assessed together, it becomes harder to identify which changes should be carried forward in the design work.