滑行面纵拱对深V滑行艇水动力性能影响的数值仿真

Numerical Study of Planing Bottom's Arch Angle Influence on Resistance and Stability of the Deep V Planing Craft

利用重叠网格技术对深V滑行艇进行了两自由度的静水直航非定常运动数值仿真,将仿真值与试验值进行了对比分析,验证了数值模拟的可行性。比对不同拱度滑行面的阻力性能及运动稳定性发现:较大的拱度可以大幅提升滑行艇的临界运动速度,1°的拱面可以将运动临界速度提升30%,但是起滑后阻力增长较多;0.6°的拱面即可以在中高速滑行阶段降低约15%的阻力,也可以将临界运动速度提升10%。

It simulated deep V palning craft＇s unsteady straight movement under still water and two degrees of freedom by using overset mesh technology. This paper compared the result of numerical simulation and experiment,and verified the reliability of the numerical simulation. Compared planing bottom with different arch angle,the results show that critical speed and resistance can also be sharply increased with big arch angle. Critical speed got 30 percent up with 1. 0° arch angle. During middle speed stage planning bottom with 0. 6°arch angle,it can reduce 15% resistance and increase critical speed about 10%.