merged

Computational Fluid Dynamic (CFD) Analysis on Seakeeping Performances
of a Tanker Ship
Rosdiana binti Rashid
Supervisor: Assoc. Prof. Ir. Dr. Eng. Ahmad Fitriadhy
Bachelor of Applied Science (Maritime Technology)
School of Ocean Engineering
Universiti Malaysia Terengganu
Seakeeping may contribute to unsafe navigation due to excessive dynamic responses
of ship’s motion. An investigation to predict accurate seakeeping performance of a
tanker ship in real sea is apparently required. Therefore, a Computational Fluid
Dynamic (CFD) was used to develop several parameters such as various Froude
numbers with wavelength, wave height, and wave directions on heaving and pitching
motions were taken into account. The results revealed that the higher Froude number
was proportional to the increase of her heave and pitch motions. These led to the
demote seakeeping performances specified in the form of high Response Amplitude
Operators (RAO). In the short wavelength, the subsequent increase of wavelength
was proportional with the increased RAO of the vertical motions. The increase in wave
height had affected a proportionate increase in the heave and pitch motions that may
lead to degrade her seakeeping quality. It is shown that the estimated seakeeping
performance of the tanker greatly depends on the Froude number and magnitude of
wavelength.
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