高速深V滑行艇阻力模型试验及数值对比研究

Experimental and numerical study on resistance of Deep-V planing vessels

该文针对深V滑行艇高速航行性能,基于计算流体动力学(CFD)方法开展静水航行数值模拟,分析多船型方案阻力和流场特征,优选方案阻力降低约12%。开展模型阻力试验,测量排水量弗劳德数在1.8-4.6范围内的船模阻力、纵倾和湿长度等,与CFD仿真开展对比研究,分析排水、过渡和滑行状态以及重心处于不同纵向位置时的阻力和航行特性。研究结论对深V滑行艇阻力预报以及船型设计具有重要意义。

In present paper,Computational Fluid Dynamics(CFD)is applied to simulate hydrodynamic performance of deep-V planing vessels voyaging in calm water.Calm water resistance are computed with the analysis of wave pattern of different types of hull form.Numerical results indicate the total resistance of the optimized hull is reduced about 12%.Towing tank test is carried out for the optimized hull at various speeds(FrΔ=1.8-4.6),in which resistance,sinkage,trim,wetted length are measured.Comparative study is performed between CFD and experiments,followed by detailed analysis on resistance and hydrodynamic performance of the craft at displacement,transitive,and planing voyaging state with different LCG positions.Conclusion of the study is significant for resistance prediction and hull form development of deep-v planing vessels.