Wash wave effects on ships moored in ports

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A ship moored in a port is subjected to both the sea waves and the wash waves produced by nearby passing ships. A hybrid numerical model is proposed to estimate the transient response of a moored ship exposed to the two types of waves. The hybrid method is based on the combination of 3-D Rankine source method and impulse response theory. The 3-D Rankine source method is applied to address the wash waves and the wave-structure interactions. The transient response is subsequently simulated in time-domain with the impulse response theory. The transient effect produced by the wash wave impact loads is found to be dependent on the sea waves induced response. The transient effect becomes less significant when the sea waves induced response is strong and vice versa. Besides, the propagation distance of wash waves has a limited influence on the transient response due to the dissipation feature of the divergent wash waves. The transient response in stochastic sea waves is also investigated, which is dominated by the resonant frequency, the sea wave frequency and the wash wave varying frequency.

LanguageEnglish
Pages89-105
Number of pages17
JournalApplied Ocean Research
Volume77
Early online date14 Jun 2018
DOIs
Publication statusPublished - 31 Aug 2018

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Wave effects
Ships
Transient analysis
Impulse response
Numerical models

Keywords

  • moored ship
  • port
  • sea waves
  • transient response
  • wash waves
  • wave impact loads

Cite this

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title = "Wash wave effects on ships moored in ports",
abstract = "A ship moored in a port is subjected to both the sea waves and the wash waves produced by nearby passing ships. A hybrid numerical model is proposed to estimate the transient response of a moored ship exposed to the two types of waves. The hybrid method is based on the combination of 3-D Rankine source method and impulse response theory. The 3-D Rankine source method is applied to address the wash waves and the wave-structure interactions. The transient response is subsequently simulated in time-domain with the impulse response theory. The transient effect produced by the wash wave impact loads is found to be dependent on the sea waves induced response. The transient effect becomes less significant when the sea waves induced response is strong and vice versa. Besides, the propagation distance of wash waves has a limited influence on the transient response due to the dissipation feature of the divergent wash waves. The transient response in stochastic sea waves is also investigated, which is dominated by the resonant frequency, the sea wave frequency and the wash wave varying frequency.",
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Wash wave effects on ships moored in ports. / Li, Liang; Yuan, Zhiming; Gao, Yan.

In: Applied Ocean Research, Vol. 77, 31.08.2018, p. 89-105.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Wash wave effects on ships moored in ports

AU - Li, Liang

AU - Yuan, Zhiming

AU - Gao, Yan

PY - 2018/8/31

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N2 - A ship moored in a port is subjected to both the sea waves and the wash waves produced by nearby passing ships. A hybrid numerical model is proposed to estimate the transient response of a moored ship exposed to the two types of waves. The hybrid method is based on the combination of 3-D Rankine source method and impulse response theory. The 3-D Rankine source method is applied to address the wash waves and the wave-structure interactions. The transient response is subsequently simulated in time-domain with the impulse response theory. The transient effect produced by the wash wave impact loads is found to be dependent on the sea waves induced response. The transient effect becomes less significant when the sea waves induced response is strong and vice versa. Besides, the propagation distance of wash waves has a limited influence on the transient response due to the dissipation feature of the divergent wash waves. The transient response in stochastic sea waves is also investigated, which is dominated by the resonant frequency, the sea wave frequency and the wash wave varying frequency.

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