SBD技术在"探索一号"科考船线型设计中的应用

文章介绍了"探索一号"科考船船体改型设计及基于数值仿真方法(Simulation Based Design,SBD)的艏部线型优化设计。首先,依据总体设计要求,对原船艏部进行了加长并开展了线型设计,采用基于RANS的数值评估方法对改型前后船舶阻力进行计算分析。在此基础上,采用SBD技术开展了艏部线型优化设计,以设计航速时的总阻力作为目标函数,FFD方法实现船体几何自动重构,利用粒子群优化算法对线型优化设计问题进行求解,设计结果表明:在满足工程约束条件下,最优方案总阻力收益十分显著,航速12kns时模型总阻力减小了7.7%,剩余阻力系数减小了26.6%。

Application of SBD technique on'TAN SUO YI HAO' scientific investigation ship hullform design

The hullform redesign and the bow hull optimization based on SBD(Simulation Based Design) tech-nique of 'TAN SUO YI HAO' scientific investigation ship are introduced. According to the overall design demand, the original hull bow is lengthened and the hullform design is launched. The resistance of the ship is calculated and analyzed by using numerical method based on RANS.On this basis,the bow hull is opti-mized by SBD technique. Regarding the total resistance at design speed as target function, FFD method is chosen to automatically modify hullform geometry, and Particle Swarm Optimization (PSO) is adopted for solving optimization design problem. The optimization design results show that the total resistance decreas-es significantly under the condition of satisfying engineering restraint, with a reduction of 7.7% on model total resistance and 26.6%on model residual resistance coefficient at 12kns.