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Trimaran is a multihull vessel that consists of a long slender center hull with two small outriggers or side hulls that are connected to the main hull by a cross structure. Hydrodynamic interactions between the main and side hulls cause significant loads applied to the transverse structure. This paper investigates the numerical analysis of the wave...
Contexts in source publication
Context 1
... µí±í µí±í µí±í µí± (2) where í µí±í µí± is the wave amplitude, í µí¼í µí¼ e is the encountered wave frequency, which is due to the ship speed í µí±í µí±, í µí±í µí± = í µí¼í µí¼ 2 í µí±í µí± ⁄ is the wave number, í µí»½í µí»½ is the wave heading angle (í µí»½í µí»½ =0 for the following wave) and í µí¼í µí¼ is the wave frequency (Fig. 2). where í µí¼í µí¼ í µí±¢í µí±¢ is defined as follows: í µí¼í µí¼ í µí±¢í µí±¢ = |í µí¼í µí¼ − í µí±í µí±í µí±í µí±í µí±í µí±í µí±í µí±í µí»½í ...
Context 2
... the frequency range 0.7-1.5 rad/s a higher speed also generates a higher response. Figure 20 shows RAOs in bow quartering seas. It can be seen that the response is slightly linear with respect to the wave frequencies and the same in the entire vessel speeds between a frequency range of 0.37 to 0.70 rad/s. ...
Context 3
... RAOs of vertical shear forces are presented in Figs. 22 to 24. Figure 22 shows RAOs in beam seas. It can be seen the responses at frequencies ranging from 0.21 to 0.7 rad/s and above 1.8 rad/s are approximately the same for all three speeds of the vessel. ...
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... a higher speed also generates a higher response. Figure 23 shows vertical shear forces RAOs in bow quartering seas. Responses are linear with respect to the wave frequencies between a frequency range of 0.50 to 0.90 rad/s. ...
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... changes in the vessel speeds affect the responses at higher frequencies in this heading. There is a clear distinction between their peak magnitudes at a vessel speed of 30 knots which has the highest responses. The vertical shear force response in the head seas is illustrated in Fig. 24. It is perceived that vertical shear forces are nonlinear with respect to the wave frequencies and contains some "Kinks" within the frequency range 0.5-1 rad/s. So, vessel speeds influence the trend and peak values. The response has the highest peak value at a vessel speed of 30 ...
