Research on the Influence of Propeller Slipstream on Wing Characteristics
In order to verify the correctness and practicability of the multi-reference system model method for the constant numeri-cal simulation of propeller aerodynamic performance,a 3D model was established with propeller-wing as the research object.Based on the Navier-Stokes equation and Spalart-Allmaras turbulence model,the multi-reference system model method was used to simulate the pulling force and torque of the propeller at different speeds.Compared with the experimental results collected at the same speed of the test bench for verification and analysis,the relative error average value of the pulling force was within 1.77％,the relative error average value of torque was within 27.45％,and the influence of different installation positions of the propeller on the aerodynamic performance of the wing was analyzed.The results show that the experimental results are in good agreement with the results of the numerical simula-tion method based on the multi-reference system model.The lift coefficient and drag coefficient of the wing increase simultaneously un-der the influence of the slipstream of the front propeller,and the total lift-to-drag ratio decreases.The rotation of the propeller creates an upwash and downwash effect on either side of its rotation axis,the local attack angle of the wing increases and decreases accordingly.
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