Research on the slamming effect of offshore platforms under extreme waves conditions
With the booming of marine resources, it is vital to ensure the safety of offshore platforms under extreme waves.In the present study, the marine semi-submersible platform serves as the research target.The VOF method is employed for wave front tracking.In combination with the SST K-Omega model, the Navier-Stokes equation is solved to simulate the slamming effect under extreme waves.Mesh refinement is performed both on free surface and in fluid region around the platform.The wave conditions are selected following the DNV specification, and the rationality of the wave generation is proven by comparing the analytical wave height and the numerical wave height.Based on that, the slamming on fixed semi-submersible platform and freely moving semi-submersible platform under one-way regular wave is investigated.The deformation of the three dimensional free surface is simulated.The variation of impact pressure in time domain as well as its maximum magnitude are fully analyzed in every typical areas including the front and rear column, the lower deck and the front deck facing the wave flow.It is found that the slamming is most serious in the trapped area before the rear column and below the lower deck.
semi-submersible platform regular wave slamming effect numerical simulation
FU Li-ning FENG Guo-qing SUN Shi-li LIU Peng-cheng DU Shi-xin
College of Shipbuilding Engineering, Harbin Engineering University, Harbin, China;HEU Qingdao Ship S College of Shipbuilding Engineering, Harbin Engineering University, Harbin, China;International Join
国内会议
合肥
英文
1170-1183
2019-08-16（万方平台首次上网日期，不代表论文的发表时间）