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The National Centre for Research and Development

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Development of technologies to reduce energy consumption in marine propulsion systems and environmentally harmful emissions in maritime transport

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square with tentacles  Project title

Development of technologies to reduce energy consumption in marine propulsion systems and environmentally harmful emissions in maritime transport  

outline of the upper man silhouette  Name of Beneficiary/Beneficiaries

Centrum Techniki Okrętowej S.A.

briefcase icon  Name of programme

International programmes

newspaper icon  Competition

Polish-Turkish III

two heaps of coins icon  Project value

PLN 374,200.29

hand icon with two circles above it  Funding value

PLN 368,922.17

clock icon  Project delivery period

from 1 November 2019 to 31 March 2022

See the results of our work

1

Base bow

 

2

Modified bow

 

3

Base stern

 

4

Modified stern

What problem does our project solve?

The work involves the development of existing design tools, numerical optimisation of ESD, numerical performance forecasting analyses on a real-world scale, and experimental validation of the obtained results. Based on these analyses, guidelines for selecting ESD components for ships will be developed.

The specific objectives achieved within the project are as follows:

  1. Parameterisation of the hull shape in CAD; the NX software was used. A method was employed that assigns control parameters to an existing hull definition, proving to be more effective than creating a parametric definition of the base shape from scratch.
  2. Optimisation of the bow section with regard to drag. Using CFD calculations, the optimal bulbous bow length and longitudinal volume distribution were determined.
  3. Optimisation of the stern section with regard to drag. Using CFD calculations, the optimal longitudinal volume distribution was determined.
  4. Verification of CFD results through model tests. Drag reduction was confirmed for the optimised versions.
  5. Drag analysis results for an axisymmetric body with micro-indentations in the model basin. Comparison with the analysis results for a smooth object.
  6. Modification of in-house ESD device design software: consideration of the complete (three-dimensional) velocity field induced on the propeller.
  7. Validation of the software based on experimental model tests for the designed ESD devices.

Who will benefit from the project's results?

The computational and design techniques developed or advanced as part of the project have the following potential for implementation:

  1. The method developed as part of the task to optimise the shape of the hull by modifying the longitudinal volume distribution without changing the overall displacement is suitable for commercial projects involving shape optimisation using computational methods. This method has already been successfully applied to optimise high-performance kayaks for the Water Sport Equipment Group (POIR.01.01.01-00-0103/19 project).
  2. The computational method utilised for the first time within the ESTHETICS project, which integrates CFD and CAD programs, enables parametric optimisation of any objects optimised for hydrodynamic performance. Examples of products offered and delivered by CTO S.A. that can be optimised using parametric models, include wind tunnels and cavitation tunnels.
  3. The experience gained during the design and verification of energy recovery devices (ESD) for various types of ships enables the effective selection of such devices for projects involving retrofitting or optimising propulsion systems in newly constructed ships.