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以低雷诺数下高空长航时无人机翼型为背景,研究了翼型后缘变化的气动特性。以低雷诺数流动中气动性能良好的SD7062翼型为研究对象,采用求解二维雷诺平均N-S方程的有限体积法,选用k-kl-w湍流转捩模型,给出了数值方法与实验数据的对比验证。对翼型后缘变化的流场特性进行了细致分析,总结了后缘变化对翼型气动特性影响的变化规律,为低雷诺数流动中翼型设计提供参考。
The aerodynamic characteristics of the trailing edge of the airfoil are studied under the condition of low Reynolds number and the UAV airfoil. Based on the finite volume method for solving the two-dimensional Reynolds averaged Navier-Stokes equations and the k-kl-w turbulent transition model, the SD7062 airfoil with good aerodynamic performance at low Reynolds number flow was studied. The numerical method and experimental data Contrast verification. The characteristics of the flow field of the trailing edge of the airfoil are analyzed in detail. The variation of the trailing edge variation on the aerodynamic characteristics of the airfoil is summarized, which provides a reference for the design of the airfoil in the low Reynolds number flow.