集装箱船型线多速度点的数值优化

为获得更优化的EEDI指数,集装箱船需要基于营运范围内的型线优化,以实现油耗降低。文章以某集装箱船为研究对象,利用数值优化集成系统,采用最优化技术、曲面自由变形技术(FFD)和计算流体力学技术(CFD),对船体首部型线进行优化。数值计算表明:所得到的优化型线高速段功率略有增加、低速段功率显著降低。

Numerical optimization of hull lines of container ship at multi-speed points

The hull form of a container ship is optimized during its operation to attain optimal EEDI index, resulting in the reduction of oil consumption. The bow of a container ship is optimized based on the numerical optimization integration system, which incorporates the optimization technique, the free-form deformation (FFD) technique, and the computational lfuid dynamics (CFD) technique. The numerical results show that the power of the optimized hull line increases slightly at high speed, but decrease remarkably at low speed.