Transactions of Nanjing University of Aeronautics & Astronautics
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Aerodynamic and Acoustic Optimization for Multi-element Airfoils
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Abstract:
The paper is to integrate aerodynamic and aero-acoustic optimizatiom design of high lift devices, especially for two-element airfoils with slat. Aerodynamic analysis on flow field utilizes a high-order, high-resolution spatial differential method for large eddy simulation (LES), which can guarantee accuracy and efficiency. The aero-acoustic analysis for noise level is calculated with Ffowcs Williams-Hawkings (FW-H) integration formula. Fidelity of calculation is verified by standard models. Method of streamline-based Euler simulation (MSES) is used to obtain the aerodynamic characters. Based on the confirmation of numerical methods, detailed research has been conducted for the leading edge slat on multi-element airfoils. Various slot parameter influences on noise are analyzed.The results of the slot optimization parameters can be used in multi-element airfoil design.
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