The present study deals with the local optimization of the stern area and of the propulsive efficiency of a battery-driven, fast catamaran vessel. The adopted approach considers a parametric model for the catamaran’s innovative transom stern and a QCM (Quasi-Continuous Method) body-force model for the effect of the fitted propellers. Hydrodynamic calculations were performed by the CFD code FreSCO⁺, which also enabled a deep analysis of the incurring unique propulsive phenomena. Numerical results of achieved high propulsive efficiency were verified by model experiments at the Hamburgische Schiffbau Versuchsanstalt (HSVA), proving the feasibility of the concept.

中文翻译：

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快速双体船推进效率的优化

本研究涉及船尾区域的局部优化以及电池驱动的快速双体船的推进效率。所采用的方法考虑了双体船创新型尾板的参数模型，并考虑了安装螺旋桨效果的QCM（准连续方法）车身力模型。流体动力学计算由CFD代码FreSCO ^+进行，这也使得能够对发生的独特推进现象进行深入分析。通过在汉堡汉堡高等机械学校（HSVA）进行的模型实验验证了获得的高推进效率的数值结果，证明了该概念的可行性。