关键词: 船用水翼, 前缘抽吸, 数值模拟, 失速角, 升阻比

Abstract:

In order to reveal the hydrodynamic performance of the hydrofoil with suction synergism,a parametric study is conducted with the software of Fluent,in which a symmetrical NACA0012 airfoil is selected and the kω-SST turbulence model is utilized. The results show that the setting of suction inlets improves the hydrodynamic performance of the hydrofoil,and that,with the increase in suction inlet number,the lift coefficient decreases,while the drag coefficient first decreases and then increases,which means that there exists an optimal lift-to-drag ratio. Moreover,it is found that the lift coefficient decreases and the hydrodynamic performance degrades with the increase of the distance between two suction inlets,that the lift coefficient increases and the drag coefficient decreases with the retropulsion of suction inlets,thus improving the hydrodynamic performance,and that the lift coefficient,the drag coefficient and the lift-to-drag ratio all fluctuate with the widening of suction inlets.

Key words: hydrofoil, front suction, numerical simulation, stalling angle, lift-to-drag ratio