MAR119 JoRes

Summary project

Development of an industry recognised benchmark for Ship Energy Efficiency Solutions to increase confidence in numerical methods and create a basis for further ship performance improvement and industry digitalisation.

Purpose of the project

The main objective of the proposed Joint Research project (JoRes JRP) is to join the industry efforts and gather the full set of the ship performance data (model test results, Computational Fluid Dynamic (CFD)calculations and ship scale measurements) and increase knowledge on the important propeller/hull interaction effects to better understand the ship efficiency potential.

Furthermore JoRes is aiming at the following:

1. Increase knowledge on the important full scale propeller inflow field, critical to the design of propellers and ESD’s, as well as hull design.

2. Develop a full set of industry recognised benchmark cases for ship and model scale validation of CFD computations

3. Increase confidence primarily in ship scale CFD and assess their performance compared to traditional model testing.

4. Collect aforementioned results in convenient and quickly accessible web-based format.

5. Prepare fully accessible data for further development of the ship digital twin concept.

Motivation

With implementation of new environmental regulations, the shipping industry is challenged and hence highly motivated to explore new energy efficiency solutions in ship hydrodynamics. The common practice in ship design is to employ model tests and/or model scale computational fluid dynamic (CFD) calculations. Unfortunately, they are hampered by the viscous effects which lead to unquantified scale effects. Ship scale CFD methods would be a good alternative, but careful and independent validation is required for common acceptance and recognition.

Moreover, the value of validated CFD modelling to ship designers goes beyond predicting a ship’s performance at the conceptual stage. It can be used to identify

causes of poor performance in existing vessels, and furthermore to predict the effectiveness of energy saving measures that improve the hydrodynamics as well as aerodynamics associated with the vessel in question. It could be used to tailor vessel design to a specific operating profile, maximizing efficiency, minimizing the environmental impact and assessing maneuvering capabilities accurate ship flow modelling can also assist in failure investigations, such as, but not limited to propeller cavitation, noise levels and flow induced ship vibration. At last, a validated CFD method is also a key component for the innovative digital twin concept which supports further digitalization of the maritime industry.

Innovativeness

This project will be the first in the world to measure full-scale flow fields, through innovative large-scale PIV measurements on a ship.

Valorisation

Project duration

01-04-2019 / 30-04-2019