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Aerodynamics of smart flap under ground effect

机译：地面作用下智能襟翼的空气动力学

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Aerodynamic characteristics of two-dimensional smart flap under the ground effect have been assessed by a numerical simulation. In this process, a pressure-based implicit procedure to solve Navier-Stokes equations on a nonorthogonal mesh with collocated finite volume formulation is used. The boundedness criteria for this procedure are determined from the Normalized Variable Diagram (NVD) scheme. The procedure incorporates the k-e eddy-viscosity turbulence model. Cantilever beam with uniformly varying load with roller support at the free end is considered for the configuration of the smart flap. The method is first validated against experimental data. Then, the algorithm is applied for turbulent aerodynamic flows around airfoil with smart and conventional flaps for different attack angle, flap angle and ground clearance where the results of two flaps are compared. The comparisons show that the quality of the solution is considerable.
机译：通过数值模拟评估了二维智能襟翼在地面作用下的气动特性。在此过程中，使用基于压力的隐式过程来解决非正交网格上具有并置有限体积公式的Navier-Stokes方程。此过程的有界条件由标准化变量图（NVD）方案确定。该程序包含了k-e涡流-粘性湍流模型。对于智能襟翼的配置，考虑了悬臂梁，其悬臂梁在自由端具有均匀变化的负载。首先根据实验数据验证该方法。然后，针对不同的迎角，襟翼角度和离地间隙，将该算法应用于具有智能襟翼和传统襟翼的翼型周围的湍流空气动力流，并比较两个襟翼的结果。比较表明，解决方案的质量相当可观。

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