Author/Authors :
Khedmati Mohammad Reza نويسنده Associate Professor, Department of Marine Technology, Amirkabir University of Technology , Akbari Vakilabadi Karim نويسنده Marine Faculty of Imam Khomeini Maritime University, Nowshahr-,Iran, Assistant Professor , HasanAbadi Abbas نويسنده Marine Faculty of Imam Khomeini Maritime University, Nowshahr-, Iran, Lecturer, Msc , Mohammadi Alireza نويسنده Marine Faculty of Imam Khomeini Maritime University, Nowshahr-, Iran, Lecturer, Msc
Abstract :
Dynamic behaviour of a trimaran vessel is investigated in this study. The body of the trimaran is composed of a centre hull with a quite slender wave piercing bow profile (a length-to-width ratio of 12.96) and two outriggers with Wigley mathematical body. Trimaran hull form and motion have been extensively studied due to the development of numerical and analytical methods as well as the exploitation of experimental setup. In this article, we investigate the possibility to move the side hulls longitudinal and transversal with respect to the main hull in order to find the optimum situation for minimum drag. The mathematical approach is numerical method CFD with the help of VOF. Moreover the experimental measurement was provided for some cases. The simulation results indicated good agreement with the experimental results. The investigations undertaken within the scope of this article provide a starting point to investigate the flow pattern and performance of such ships.
