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基于滑移网格模型,通过求解三维非定常N-S方程,数值模拟了螺旋桨侧飞状态时的运动过程,仿真研究了侧偏角对螺旋桨气动性能的影响。主要结论有:由于螺旋桨轴向速度随着偏角的增大逐渐减小,所以螺旋桨轴向拉力随着偏角的增大逐渐增大,螺旋桨的侧向阻力随着偏角的增大逐渐减小。桨叶上的分离区域随着偏角的增大逐渐增大,当偏角为0°、30°、60°时,桨叶上分离涡的尺度随着桨径的增大逐渐增大,当偏角为90°时,分离涡的尺度随着桨径的增大逐渐减小。
Based on the sliding mesh model, the three-dimensional unsteady N-S equation was solved to simulate the propeller flight behavior in the side-fly state. The influence of slip angle on the aerodynamic performance of the propeller was simulated. The main conclusions are as follows: As the axial velocity of propeller decreases with the increase of declination, the axial tensile force of propeller increases with the increase of declination angle, and the lateral resistance of propeller declines with the increase of declination small. When the declination angle is 0 °, 30 °, 60 °, the size of the separation vortex on the blade gradually increases with the increase of the diameter. When the declination angle increases, When the declination angle is 90 °, the dimension of the separating vortex decreases with the increase of the diameter of the impeller.