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http://dx.doi.org/10.5394/KINPR.2013.37.5.481

Analysis on the Pitch Response Spectra of a Catamaran with Bulb  

Seo, Kwang-Cheol (School of Marine Science and Technology, Newcastle University)
Lee, Chang-Woo (Dept. of Naval Architecture & Ocean Engineering, Mokpo National Maritime University)
Atlar, Mehmt (School of Marine Science and Technology, Newcastle University)
Lee, Gyoung-Woo (Dept. of Naval Architecture and Ocean Engineering, Mokpo National Maritime Uni.)
Gim, Ok-Sok (School of Marine Science and Technology, Newcastle University)
Publication Information
Journal of Navigation and Port Research / v.37, no.5, 2013 , pp. 481-486 More about this Journal
Abstract
In this study, a commercial seakeeping program Seakeeper, integrated into Maxsurf, which is based on the linear strip theory was employed to compare the effect of bulbous bow (with/without) on motion response characteristics in a 18-meter catamaran. The seakeeping analyses were conducted at several Beaufort wind conditions such as scale No. 3 ($\bar{T}=2.98s$, $H_{1/3}$ =0.6m), No. 4 ($\bar{T}=3.85s$, $H_{1/3}$ =1m) and No. 5 ($\bar{T}=5.44$, $H_{1/3}$ =2m) based on ITTC wave spectrum. Pitch motion response spectrum was calculated at Head sea, Head & bow sea and Beam sea as encounter angles. Hull form of a catamaran with bulb showed the maximum 20% decrease of pitch motion response as compared to that of hull form without bulb.
Keywords
Catamaran; Hull form design; Motion response spectrum; Strip theory; ITTC wave spectrum;
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Times Cited By KSCI : 3  (Citation Analysis)
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