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- W2373896283 abstract "The Reynolds numbers of current Micro Air Vehicles(MAVs) lie in the range 104-105.At such low Reynolds numbers,airfoils suffer from reduced lift-to-drag ratio and prone to flow separation.To improve the aerodynamic performance of airfoils in such low Reynolds number environment,the method of forced transition is investigated.In this study,transition is fixed ahead of the location at which free transition occurs.To test the effect of this method,E387 airfoil is computed on 4.0×104 Reynolds number for different angles of attack.The results show great improvement of lift coefficient and lift-to-drag ratio because of the decreased separation zone.Furthermore,forced transition is applied in low Reynolds number oscillating freestream environment,the performance of airfoils which transition freely deteriorates when Reynolds number decrease.However,the forced-transition airfoils have a much more stable lift coefficient and power index(C3/2l/Cd).The results of this paper indicate that the forced transition method can significantly improve the aerodynamic performance of low Reynolds number airfoils." @default.
- W2373896283 created "2016-06-24" @default.
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- W2373896283 date "2007-01-01" @default.
- W2373896283 modified "2023-09-26" @default.
- W2373896283 title "Improving the aerodynamic performance of low Reynolds number airfoils in oscillating freestream with forced transition method" @default.
- W2373896283 hasPublicationYear "2007" @default.
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