Ship Hull Form Optimization Design for KCS Considering Uncertainty of Ship Speed

摘要

At present, most of ship hull form optimization design is based ondeterministic parameters. However, in the actual engineering problem,there are many unavoidable uncertain factors. For instance, the shipspeed may vary around the design speed due to wind, waves, flow andother environmental or human factors while sailing. The optimal shipbased on deterministic parameters may fail to reach the predeterminedtarget while parameters change. An uncertainty optimization methodbased on stochastic programming is applied to reduce the resistance ofKCS considering uncertainty of ship speed in this paper. The wholeoptimization process is based on an in-house ship hull form optimizationsolver, OPTShip-SJTU. Comparison and analysis of the resistance andflow field between initial ship and optimal ship validates the rationalityand effectiveness of uncertainty optimization based on stochasticprogramming in ship hull form optimization design field.