Due to environmental concerns and increasing fuel prices, there is today a strong focus on improving the fuel efficiency of ships.

Purpose

Due to environmental concerns and increasing fuel prices, there is today a strong focus on improving the fuel efficiency of ships. Modern analysis tools provide means to improve the fuel efficiency by careful optimization of the hull and propeller in terms of resistance and propulsion efficiency. Operating conditions that will occur throughout the vessel’s lifetime should be taken into account in the assessment, as experience shows that there may be a lot to gain at off-design conditions.

Benefits

DNV can assist with resistance and propulsion analysis to improve the fuel efficiency of the ship hull during the concept development phase or the design phase of a new ship, or for ships in operation. Our experts have extensive experience with resistance and propulsion analysis using state-of-the-art analysis tools. The resources, tools and procedures deployed for such kind of studies have been verified and proven successful in a number of projects. In-depth understanding of the physical and mechanical characteristics of the problems, combined with long experience and a practical engineering approach, ensures high quality deliverables.

Features

Hydrodynamic analysis to assess and optimize the resistance and propulsion characteristics, using applications such as the fully viscous CFD code Star- CCM+, the potential CFD code Shipflow and various specialized programs to e.g. calculate propeller efficiency and added resistance in waves.

The list of technical services includes:

• Hull form optimization
• Trim optimization
• Wake and propeller analysis
• Hull and propeller interaction
• Assessment of fuel efficiency devices
• Added resistance in waves
• Model test and sea trial attendance

• EEDI calculations