Sinergi
Vol 26, No 2 (2022)

An analysis of the effect of the bow entrance angle on ship resistance

S. Samuel (Department of Naval Architecture, Faculty of Engineering, University of Diponegoro)
Sam Timoty Frans Evan S. (Department of Naval Architecture, Faculty of Engineering, University of Diponegoro)
Andi Trimulyono (Department of Naval Architecture, Faculty of Engineering, University of Diponegoro)
Muhammad Iqbal (Department of Naval Architecture, Ocean, and Marine Engineer, University of Strathclyde)



Article Info

Publish Date
01 Jun 2022

Abstract

Modifying the hull shape is one of the challenges in designing a ship. The angle of the ship's entrance is a significant determinant of the total resistance of the ship. This research aimed to analyze the total resistance of the ship due to changes in the shape of the ship's bow. This research used the Computational Fluid Dynamics (CFD) method with overset mesh technique to predict the ship's total resistance and trim angle. Parameters used in the five-speed numerical simulations. This research indicated that a change in the bow angle of the ship results in a 5% change in the ship's resistance for every change in the bow entrance angle. Therefore, the prediction of total resistance shows significant results in planning conditions. Compared to another bow entrance angle at low Fr, total resistance has no noticeable differences. Angle changes of the entrance of the ship's bow also significantly affected the trim conditions on the ship according to the speed. At Fr 1.03, the stern trim angle tended to decrease dramatically. As a result, the trim by stern under porpoising probably oscillates considerably.

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Journal Info

Abbrev

sinergi

Publisher

Subject

Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

Description

SINERGI is a peer-reviewed international journal published three times a year in February, June, and October. The journal is published by Faculty of Engineering, Universitas Mercu Buana. Each publication contains articles comprising high quality theoretical and empirical original research papers, ...