Effect of relative longitudinal spacing on the dynamic behavior of two interacting ships in head waves

R. Ali

State Marine Technical University of St. Petersburg

Abstract: The influence of relative longitudinal position on the frequency characteristics of two interacting ships floating stationary in close proximity in head waves and shallow water is investigated in this paper. A CFD approach has been adopted to simulate the dynamic behavior of the interacting ships. The numerical simulation for “Aleksey Kosygin” and “Novgorod” ships floating on head waves at a small relative transverse distance was carried out using two scaled models. The effect of longitudinal separation on the frequency characteristics of both ships was studied. Heave, roll, and pitch RAOs for various cases were analyzed, and recommendations for relative longitudinal positions were made on the basis of the present analysis.

Keywords: Lightering operation, Hydrodynamic Interaction, ship motions, RANS, CFD, OpenFOAM

Language: English

DOI: 10.15514/ISPRAS-2022-34(6)-15