扑翼微飞行器飞行时的数值模拟与分析

摘要

Three-dimensional unsteady incompressible N-S equation is solved by numerical method and the corresponding three-dimensional dynamic mesh is generated. The flapping motion and unsteady flowfield of flapping-wing MAV in different frequencies, different angles of attack, different velocities, different amplitudes and different initialized positions of wing are simulated. The lift and drag coefficient of flapping-wing MAV in different motion modes are calculated. The factors that influence the characteristic of aerodynamics of flapping-wing MAV are analyzed, which provided the academic warrant for the flying mechanisms and fabrication of flapping-wing MAV.%采用数值方法求解三维非定常不可压缩的N-S方程, 生成了相应的扑翼微飞行器的三维动网格;模拟了扑翼微飞行器在不同频率、不同攻角、不同振幅、不同飞行速度、不同的翅膀初始位置下的非稳态流场;计算了扑翼微飞行器在不同运动模态下的升阻力系数;分析了影响扑翼微飞行器空气动力学的特性的不同因素;为扑翼微飞行器的飞行机制和建造提供了理论依据.