针对水陆两栖飞机在波浪状态下的强非线性运动响应及安全起降需求，采用空气动力和水动力耦合求解并结合动力学平衡方程对飞机的波浪滑水载荷进行计算。采用雷诺平均N-S方程和 SST k-ω两方程模型求解非定常流场，流体体积分数法（VOF）捕捉自由液面，并与模型试验结果对比验证数值方法的可靠性。基于上述方法，研究了速度、波长、波高等参数对滑水载荷的影响规律，结果表明：滑水载荷随波高的增大而增大，但不同波高状态下的载荷差异性随波长的增加呈逐渐减小的趋势；滑水载荷与速度呈正相关；滑水载荷峰值一般发生在1.2～1.8倍机身长的短波状态，随着波长的增加，飞机的载荷逐渐减小，当波长大于4倍机身长后，飞机的载荷值趋于收敛。
Aimed at strong nonlinear motion response and safe take-off as well as landing requirements, the aerodynamic and hydrodynamic coupling solution and dynamic balance equation are used to calculate the wave loads of the seaplane. The Reynolds averaged N-S equation and SST k-ω two equation model are used to solve the unsteady flow field, and the volume of fluid (VOF) method is adopted to capture the free wave surface. Then, the reliability of the numerical method is verified by comparison with the model tank test results. Based on the above method, the influence of sliding speed, wavelength and wave height on the wave load is studied, it shows that the wave load increases with wave height, but the load difference caused by wave height shows a decreasing trend with the increase of wavelength. There is a positive correlation between wave load and sliding speed. The peak load generally occurs in the short wave of 1.2～1.8 times the length of the fuselage, and the wave load shows a gradual decline with the increase of wavelength. When the wavelength reaches to 4 times the length of the fuselage, the wave load tends to converge.
2023,45(8): 31-34 收稿日期：2022-11-09
DOI：10.3404/j.issn.1672-7649.2023.08.007
分类号：U661.32
基金项目：民用飞机专项研究项目（MJZ5-3N21-5）
作者简介：李万(1986-),男,博士,研究方向为水动力
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