高速船舶减阻水翼附体数值计算分析

Numerical analysis of drag reduction of hydrofoil appendage for high-speed ship

[目的]为减小高速船舶的兴波阻力,提出一种减阻水翼附体。[方法]水翼附体截面选择NACA 0012翼型,采用经收敛性验证和可靠性验证的数值计算方法,对安装于船艏的不同尺寸、不同安装位置水翼附体的减阻效果进行研究,并进一步分析在船艉加装T型翼的减阻效果。[结果]结果显示,当仅在船艏安装了水翼附体时,在高航速(Fr=0.45,0.494)下总阻力最大可以减小7.38%和6.82%;在船艉加装T型翼后,阻力会进一步减小,在高航速(Fr=0.45,0.494)下总阻力分别可以减小9.35%和11.13%。[结论]所提出的减阻水翼附体可以大幅减小高速船舶的总阻力,提升高速船舶的快速性,能够为进一步改善高速船舶的航行性能提供新的技术手段。

[Objective]In order to reduce the wave-making resistance of high-speed ships, this paper proposes an innovative hydrofoil appendage with a drag reduction effect. [Methods]An NACA 0012 airfoil is selected for the hydrofoil appendage cross-section, and a series of studies on the drag reduction effects of bowmounted hydrofoil appendages of different sizes and installation positions is carried out using the numerical calculation method verified by convergence and reliability tests. The drag reduction effect of adding a T-wing to the stern of a ship is further studied. [Results]The results show that the maximum drag reduction is7.38% and 6.82% at high speeds of Froude number 0.45 and 0.494 when the hydrofoil appendage is only installed at the bow. The drag is further reduced after adding the T-wing to the stern, and the total drag reduction is 9.35% and 11.13% at high speeds of Froude number 0.45 and 0.494. [Conclusions] The hydrofoil appendage with a drag reduction effect proposed in this paper greatly reduces the total drag of high-speed ships,improves their speed and provides new technical means for further improving their navigation performance.