Work

Powering performance prediction of a semi-displacement ship retrofitted with Hull Vane

Year: 2023

Type: article

Abstract: This study predicts the powering performance of a semi-displacement ship, both without and with a Hull Vane (HV). HV is an energy-saving appendage fixed at the transom bottom of the ship’s hull. Although the HV is commercially known as a successful resistance-reducing device, there are no studies in the literature examining its effect on propulsion performance in detail. In this study, the effect of the hull vane on the propulsion performance is investigated and a practical method is proposed as an engineering application to reduce the computation time. Initially, the “rotorDisk” approach based on Blade Element Theory (BET) is preferred to create a thrust force instead of using an entire physical propeller. The dynamic motions of the ship is reflected to the computational analysis. Subsequently, the sliding mesh technique, which models the exact propeller geometry, is implemented to calculate the self-propulsion characteristics without and with HV. These computations are achieved by employing “interFoam” solver available in OpenFOAM. This study provides a significant demonstration to clarify the effect of HV on powering performance. It not only decreases effective power by 11.41% but also increases the propulsive efficiency by 2.1%, which reduces the brake power by 14.61% in total at service speed.

Source: Ocean Engineering

DOI: 10.1016/j.oceaneng.2023.115561

Authors: Cihad Çelik, Devrim Bülent Danışman

Institutions: Istanbul Technical University, Liverpool John Moores University

Language: English

Topic: Ship Hydrodynamics and Maneuverability

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $4,030