NUMERICAL SIMULATION ON A DEEP-DRAFT SEMI-SUBMERSIBLE

MOHD ASAMUDIN A RAHMAN, Universiti Malaysia Terengganu, ALIATULNAJIHA AYUB
2021 Universiti Malaysia Terengganu Journal of Undergraduate Research  
A numerical study is conducted to determine the Vortex Induced Motion (VIM) effects on Deep-Draft Semi-Submersibles (DDSS). The VIM phenomena is a crucial problem that can cause severe impact on the fatigue life of mooring risers in DDSS. Therefore, a comprehensive numerical simulation is conducted using the Acusolve computational fluid dynamics (CFD) software. Five models of immersed columns with different aspect ratios (ie. 0.6, 0.8, 1.0, 1.2 and 1.4) are numerically investigated under two
more » ... ferent incidence angles, which are 0° and 45°. The transverse and in-line vibration amplitude, amplitude of lift force coefficient and vortex shedding are analyzed. The numerical measurements are obtained to see the response of horizontal plane motions, which are transverse, in line and yaw motions. This study with detailed numerical results from parametric data will contribute future studies and the comparisons are made to demonstrate the capability of the present CFD approach.
doi:10.46754/umtjur.2021.04.008 fatcat:g2bkgq7bcnh7ndjzvfkznhukim