【摘要】 通过对三维Navier-Stokes方程的求解,模拟低雷诺数下细长体大迎角非对称涡流动,来分析大迎角细长体非对称背风涡的结构及影响大迎角细长体侧向力变化的流场因素。结果表明,截面侧向力沿轴向呈正弦规律变化,影响侧向力的主要因素有细长体两侧边界层的绕流特征、分离涡强度不等及两侧边界层的转捩不对称。更多还原

【Abstract】 Numerical simulations of the high angle of attack flows around an ogive-nose slender body are conducted to analyze separation vortices and reasons for producing side force.The numerical results are obtained by solving Navier-Stokes equations.Some useful conclusions are drawn: side force is proportional to sinθ,the boundary layer characteristic,strength of separation vortices and asymmetrical flow transition at the two sides are the main reasons for producing side force.更多还原