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本文利用有限体积法求解NS方程,基于翼身组合体构型,针对鲨鱼鳍式翼梢小翼的高度展开数值计算研究,分析翼梢小翼巡航气动减阻收益,翼根弯矩增大带来结构重量的增加和翼梢小翼自身重量的综合影响。研究表明:气动减阻折算的重量收益,远远大于弯矩折算重量和小翼自身重量的代价;同时,翼梢小翼综合重量收益,随着高度的增加先增大后减小,存在一个最佳值。
In this paper, the finite volume method is used to solve the Navier-Stokes equations. Based on the wing-body assembly configuration, a numerical study on the height development of shark fin-shaped winglet is carried out. The aerodynamic drag reduction of winglet winglets is analyzed. The combined effect of increased structural weight and the winglets’ own weight. The results show that the weight gain of the aerodynamic drag reduction is far greater than the cost of the bending moment and the weight of the winglets. At the same time, the overall weight gain of the winglets first increases and then decreases with the increase of altitude, best value.