by Thiago G. Monteiro, Jiafeng Xu and Henrique M. Gaspar
(hega @ hials.no), v0.1, Nov 2015.
A Ship Design and Operations Lab App.
Length Waterline
Breadth
Depth
Draft
Block Coefficient :
KG
Time Span
Linear Resist. Coef. [m/s]
Roll Lin. Damp. Coef.[kgm2/s]
Initial Heave. [m]
Initial Roll. [rad]
Initial Pitch. [rad]
| Name | X position (m) | Y position (m) | Z position (m) | Mass (kg) | Length (m) | Height (m) | Width (m) | ||
|---|---|---|---|---|---|---|---|---|---|
| Body 1 | 5 | 4 | 5.5 | 300000 | 1 | 1 | 1 | ||
Assumptions:
- A barge like vessel is floating on the still water surface, the motion, induced wave and added mass effect is neglected
- It's calculated a time series of linear roll and heave, with three degress of freedom (x, y and rad)
- Model is considered stable (GM > 0), and Roll ressonates when GM < 0
- Block Coefficient is used in calculations, but not plotted in the transversal and longitudinal animations
- The body fixed reference frame is located at the geometric center of the vessel
Animation and Plots :