Dynamic Stability of Liquefied Cargo Ship in Waves

Recent problems with liquefied cargoes leading to serious loss of life are attracting atten tion by the international community to address this problem scientifically. Even though there is much yet to be understood concerning the phenomenon itself, for example its inception and cargo behaviour post-liquefaction, it is more than likely that liquefied cargo will behave as a non-Newtonian fluid. With this in mind, a numerical simulation method is presented in this paper based on CFD technique to consider tank sloshing and dam break of water and liquefied cargoes. Calculated results are com pared with experimental data to verify the method. Herschel-Bulkley fluid is chosen as the non-Newtonian fluid to describe the properties of liquefied cargoes. To assess the dynamic characteris tics of liquefied cargoes, coupled motion of the 2D cargo ship filled by liquefied cargoes in waves was studied based on the proposed method. © 2018, Editorial Board of Journal of Ship Mechanics. All right reserved.