南京航空航天大学学报（英文版）2021，Vol.38Issue(z1)：1-9,9.
水上飞机侧风波浪水面地面效应数值模拟
Numerical Simulation of Seaplane Wave Ground Effect with Crosswind
李阳辉 1付晓琴 1陈吉昌 1童明波1
作者信息
- 1. 南京航空航天大学飞行器先进设计技术国防重点学科实验室,南京 210016,中国
- 折叠
摘要
Abstract
Under the absolute coordinate system, the unsteady Reynolds averaged Navier-Stokes (URANS) equations and the k-ω SST turbulence model are solved using the finite volume method to simulate the aerodynamic characteristics of large seaplane flying with the ground-effect above wavy surface. The velocity inlet wave-making method and the volume of fluid model are used to accurately simulate the linear regular waves and to precisely capture the free surface. This paper studies the influence of the sideslip angle on the aerodynamic characteristics of large seaplane when it is cruising above wavy water. The results show that the wave surface mainly affects the pressure distribution on the lower surface of the wing. When the sideslip angle varies from 0° to 8°,the varying of frequency of aerodynamic forces is consistent with the wave encounter frequency,and both periods are 0.6 s. With the increase of the sideslip angle,the lift coefficient and the pitching moment coefficient decrease. However,when the sideslip angle is smaller than 4°,the decrease amplitude is small,and the significant decrease occurs above 4° and during the whole process of the change of sideslip angle,the aerodynamic fluctuation amplitude is almost unchanged. As the drag coefficient increases with the increase of sideslip angle,significant increase also occurs when the value is greater than 4° ,and the fluctuation amplitude does not show any correlations. The rolling moment coefficient and yaw moment coefficient increase with the increase of the sideslip angle,and the fluctuation amplitudes of both increase linearly with the increase of the sideslip angle.关键词
两相流/地面效应/流体体积分数模型/速度入口造波Key words
two-phase flow/wing-in-ground(WIG)effect/volume of fluid(VOF)model/velocity-inlet boundary wave maker分类
航空航天引用本文复制引用
李阳辉,付晓琴,陈吉昌,童明波..水上飞机侧风波浪水面地面效应数值模拟[J].南京航空航天大学学报（英文版）,2021,38(z1):1-9,9.
