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针对当前所研究的微型飞行器(MAV)流动特征,采用时间相关法和有限体积法求解N-S方程,选择了Van Albada插值限量因子的高分辨率空间差分格式,建立了模拟MAV三维低雷诺数流场的数值计算方法。通过熵校正技术改进和粘性计算准确性与网格密度关系的分析,确保了流场计算的准确可靠。使用该数值算法,对某常规气动布局的MAV进行流场模拟和分析,并比较了其流场与常规尺寸飞行器的不同。
According to the current MAV flow characteristics, the time-dependent method and the finite volume method are used to solve the Navier-Stokes equations. The high-resolution spatial difference scheme of the Van Albada interpolation limit factor is selected and the three-dimensional low Reynolds number flow field Numerical calculation method. Through the improvement of entropy correction technology and the analysis of the relationship between the accuracy of viscous calculation and the grid density, the accuracy and reliability of the flow field calculation are ensured. Using this numerical algorithm, the MAV of a conventional aerodynamic layout is simulated and analyzed, and its flow field is compared with the conventional size aircraft.