Next Article in Journal
Preventive Maintenance of a k-out-of-n System with Applications in Subsea Pipeline Monitoring
Next Article in Special Issue
Ship Dynamics
Previous Article in Journal
Storm Tide and Wave Simulations and Assessment
Previous Article in Special Issue
Effect of Maneuvering on Ice-Induced Loading on Ship Hull: Dedicated Full-Scale Tests in the Baltic Sea
Article

A Comparative Study of Computational Methods for Wave-Induced Motions and Loads

by 1,2,* and 2
1
Development Centre for Ship Technology and Transport Systems, 47057 Duisburg, Germany
2
Institute of Ship Technology, Ocean Engineering and Transport Systems, University of Duisburg-Essen, 47057 Duisburg, Germany
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2021, 9(1), 83; https://doi.org/10.3390/jmse9010083
Received: 15 December 2020 / Revised: 7 January 2021 / Accepted: 9 January 2021 / Published: 14 January 2021
(This article belongs to the Special Issue Ship Dynamics for Performance Based Design and Risk Averse Operations)
Ship hull structural damages are often caused by extreme wave-induced loads. Reliable load predictions are required to minimize the risk of structural failures. One conceivable approach relies on direct computations of extreme events with appropriate numerical methods. In this perspective, we present a systematic study comparing results obtained with different computational methods for wave-induced loads and motions of different ship types in regular and random irregular long-crested extremes waves. Significant wave heights between 10.5 and 12.5 m were analyzed. The numerical methods differ in complexity and are based on strip theory, boundary element methods (BEM) and unsteady Reynolds-Averaged Navier–Stokes (URANS) equations. In advance to the comparative study, the codes applied have been enhanced by different researchers to account for relevant nonlinearities related to wave excitations and corresponding ship responses in extreme waves. The sea states investigated were identified based on the Coefficient of Contribution (CoC) method. Computed time histories, response amplitude operators and short-term statistics of ship responses and wave elevation were systematically compared against experimental data. While the results of the numerical methods, based on potential theory, in small and moderate waves agreed favorably with the experiments, they deviated considerably from the measurements in higher waves. The URANS-based predictions compared fairly well to experimental measurements with the drawback of significantly higher computation times. View Full-Text
Keywords: ship motions; sectional loads; hydroelasticity; boundary element methods; CFD; validation; regular waves; steep irregular waves ship motions; sectional loads; hydroelasticity; boundary element methods; CFD; validation; regular waves; steep irregular waves
Show Figures

Figure 1

MDPI and ACS Style

Ley, J.; el Moctar, O. A Comparative Study of Computational Methods for Wave-Induced Motions and Loads. J. Mar. Sci. Eng. 2021, 9, 83. https://doi.org/10.3390/jmse9010083

AMA Style

Ley J, el Moctar O. A Comparative Study of Computational Methods for Wave-Induced Motions and Loads. Journal of Marine Science and Engineering. 2021; 9(1):83. https://doi.org/10.3390/jmse9010083

Chicago/Turabian Style

Ley, Jens, and Ould el Moctar. 2021. "A Comparative Study of Computational Methods for Wave-Induced Motions and Loads" Journal of Marine Science and Engineering 9, no. 1: 83. https://doi.org/10.3390/jmse9010083

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop