Results and Analysis
The results and analysis are divided into five parts.
The first three parts are NACA 0012 aerofoil, flat plate and curved plate. They aim at proving or disproving the existence of leading edge vortex for three aerofoils at different angles of attack (2°-7°). For each of the geometry, the following content will be talked. (a) The velocity vector scenes which shows the basic flow fields around the aerofoils. (b) The wall shear stress coefficient of five moments in one period to show the variation of flow separation and reattachment.
Leading edge vortex analysis under curved plate part gives the detailed descriptions about the leading edge vortex as it appears over the curved plate at the angle of attack 2°-4°.
The fourth part, lift and drag analysis, is to analyse the effect of the leading edge vortex by comparing the lift and drag coefficients of all the aerofoils at all angles of attack (2°-7°).
The fifth part, vorticity analysis, gives illustrations about vorticity fields of the curved plate at the angle of attack 2°. It is to investigate how vorticity is generated, dissipated and convected when the leading edge vortex exists.
The first three parts are NACA 0012 aerofoil, flat plate and curved plate. They aim at proving or disproving the existence of leading edge vortex for three aerofoils at different angles of attack (2°-7°). For each of the geometry, the following content will be talked. (a) The velocity vector scenes which shows the basic flow fields around the aerofoils. (b) The wall shear stress coefficient of five moments in one period to show the variation of flow separation and reattachment.
Leading edge vortex analysis under curved plate part gives the detailed descriptions about the leading edge vortex as it appears over the curved plate at the angle of attack 2°-4°.
The fourth part, lift and drag analysis, is to analyse the effect of the leading edge vortex by comparing the lift and drag coefficients of all the aerofoils at all angles of attack (2°-7°).
The fifth part, vorticity analysis, gives illustrations about vorticity fields of the curved plate at the angle of attack 2°. It is to investigate how vorticity is generated, dissipated and convected when the leading edge vortex exists.