Vertical motions prediction in irregular waves using a time domain approach for hard chine displacement hull

Ermina Begovic; Carlo Bertorello; Ferdi Cakici; Emre Kahramanoglu; Barbara Rinauro

doi:10.3390/JMSE8050337

Vertical motions prediction in irregular waves using a time domain approach for hard chine displacement hull

Ermina Begovic^*, Carlo Bertorello, Ferdi Cakici, Emre Kahramanoglu, Barbara Rinauro

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

In this paper, the validation of the hybrid frequency-time domain method for the assessment of hard chine displacement hull from vertical motions is presented. Excitation and hydrodynamic coefficients in regular waves are obtained from the 3D panel method by Hydrostar® software, while coupled heave and pitch motions are calculated in the time domain by applying the Cummins equations. Experiments using a 1:15 scale model of a "low-drag" small craft are performed in irregular head and following waves at Froude numbers Fr: 0.2, 0.4, and 0.6 at University of Naples Federico II, Italy. Results obtained by hybrid frequency-time domain simulations for heave, pitch, and vertical accelerations at center of gravity and bow are compared with experimental data and showed high accuracy.

Original language	English
Article number	337
Journal	Journal of Marine Science and Engineering
Volume	8
Issue number	5
DOIs	https://doi.org/10.3390/JMSE8050337
Publication status	Published - 1 May 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 by the authors.

Funding

Funding: Ferdi Çakici and Emre Kahramanog˘ lu were supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK). Ferdi ?akici and Emre Kahramanoglu were supported by the Scientific and Technological Research Council of Turkey (T?BITAK). The calculation by HydroSTAR? software were possible thanks to the cooperation agreement between Bureau Veritas and the Department of Industrial Engineering of University of Naples Federico II (https://www.docenti.unina.it/webdocenti-be/allegati/materiale-didattico/576434).

Funders	Funder number
Bureau Veritas
Department of Industrial Engineering of University of Naples Federico II
TÜBİTAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

Keywords

Cummins equations
Experimental seakeeping
Hard chine displacement hull form
Time domain simulations
Vertical motions assessment

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10.3390/JMSE8050337

Cite this

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title = "Vertical motions prediction in irregular waves using a time domain approach for hard chine displacement hull",

abstract = "In this paper, the validation of the hybrid frequency-time domain method for the assessment of hard chine displacement hull from vertical motions is presented. Excitation and hydrodynamic coefficients in regular waves are obtained from the 3D panel method by Hydrostar{\textregistered} software, while coupled heave and pitch motions are calculated in the time domain by applying the Cummins equations. Experiments using a 1:15 scale model of a {"}low-drag{"} small craft are performed in irregular head and following waves at Froude numbers Fr: 0.2, 0.4, and 0.6 at University of Naples Federico II, Italy. Results obtained by hybrid frequency-time domain simulations for heave, pitch, and vertical accelerations at center of gravity and bow are compared with experimental data and showed high accuracy.",

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author = "Ermina Begovic and Carlo Bertorello and Ferdi Cakici and Emre Kahramanoglu and Barbara Rinauro",

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doi = "10.3390/JMSE8050337",

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T1 - Vertical motions prediction in irregular waves using a time domain approach for hard chine displacement hull

AU - Begovic, Ermina

AU - Bertorello, Carlo

AU - Cakici, Ferdi

AU - Kahramanoglu, Emre

AU - Rinauro, Barbara

PY - 2020/5/1

Y1 - 2020/5/1

N2 - In this paper, the validation of the hybrid frequency-time domain method for the assessment of hard chine displacement hull from vertical motions is presented. Excitation and hydrodynamic coefficients in regular waves are obtained from the 3D panel method by Hydrostar® software, while coupled heave and pitch motions are calculated in the time domain by applying the Cummins equations. Experiments using a 1:15 scale model of a "low-drag" small craft are performed in irregular head and following waves at Froude numbers Fr: 0.2, 0.4, and 0.6 at University of Naples Federico II, Italy. Results obtained by hybrid frequency-time domain simulations for heave, pitch, and vertical accelerations at center of gravity and bow are compared with experimental data and showed high accuracy.

AB - In this paper, the validation of the hybrid frequency-time domain method for the assessment of hard chine displacement hull from vertical motions is presented. Excitation and hydrodynamic coefficients in regular waves are obtained from the 3D panel method by Hydrostar® software, while coupled heave and pitch motions are calculated in the time domain by applying the Cummins equations. Experiments using a 1:15 scale model of a "low-drag" small craft are performed in irregular head and following waves at Froude numbers Fr: 0.2, 0.4, and 0.6 at University of Naples Federico II, Italy. Results obtained by hybrid frequency-time domain simulations for heave, pitch, and vertical accelerations at center of gravity and bow are compared with experimental data and showed high accuracy.

KW - Cummins equations

KW - Experimental seakeeping

KW - Hard chine displacement hull form

KW - Time domain simulations

KW - Vertical motions assessment

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JF - Journal of Marine Science and Engineering

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Vertical motions prediction in irregular waves using a time domain approach for hard chine displacement hull

Abstract

Bibliographical note

Funding

Keywords

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