摘要
采用有限体积方法求解定常可压缩流动的质量加权平均N-S方程和标准k-ε湍流模型,模拟地效飞行器地面巡航全机流场。计算结果给出了地效飞行器气动性能随飞行高度和迎角的变化规律;采用镜像法理想涡模型分析了地面效应对翼尖涡位置和气流下洗角的影响;详细阐明了地面效应对诱导阻力的影响规律。
Numerical results are presented by simulating the flow field around a WIG （Wing-in-ground effect） craft over ground. The Favre-averaged N-S equation of steady compressible flow and the standard k-ε turbulence model are solved by the finite volume method. The effects of flight height and incidence angle on aerody namies of WIG craft are provided. Image method ideal vortex model is used for the analysis of how ground effect impacts wingtip vortex and airflow downwash angle. The influence of ground effect on induced drag is analyzed in detail.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2006年第1期16-22,共7页
Acta Aeronautica et Astronautica Sinica
基金
航空支撑科技基金(04A51005)资助项目
关键词
地效飞行器
翼尖涡
下洗角
诱导阻力
数值模拟
理想涡模型
WIG craft
wingtip vortex
downwash angle
induced drag
numerical simulation
ideal vortex model
