用动量源法模拟了旋翼的下洗流,对壁面射流控制圆柱绕流的环量控制参数进行了研究,利用Fluent软件分析了缝隙位置、大小和数目等参数对尾梁气动特性的影响,获得了圆柱体尾梁上气动力随环量控制参数变化的关系。其中,动量系数(喷气强度)和缝隙几何参数对圆柱尾梁上气动力的影响是本文重点。研究结果表明,缝隙位置对圆柱体尾梁的气动性能影响明显;旋翼下洗流中单缝最佳缝隙位置与风洞中相差很大;采用多缝喷气可提高圆柱体尾梁的最大升力系数。 The momentum flow source method was used to simulate the downwash flow of the rotor and the annular flow control parameters were studied. The influence of the parameters such as slot position, size and number on the aerodynamic characteristics of the tail beam was analyzed using Fluent software. Relationship between Aerodynamic Force and Cylinder Volume Control Parameters on Cylinder Beam. Among them, the momentum coefficient (jet strength) and the geometric parameters of the gap on the aerodynamic force of the cylindrical tail beam is the focus of this article. The results show that the location of the gap has significant effect on the aerodynamic performance of the cylindrical tail boom. The optimum slit position of the single slit in the rotor underwash flow is quite different from that of the wind tunnel. The multi-slit jet can increase the maximum lift coefficient .