In the present paper an active control mechanism for the control of laminar separation bubbles on airfoils is investigated by means of direct numerical simulation and linear stability theory. Boundary layer instabilities excited by periodic oscillations are utilized to control the size and length of the separation bubble and to make it finally disappear when desired. Unlike traditional vortex g...

In the present paper an active control mechanism for the control of laminar separation bubbles on airfoils is investigated by means of direct numerical simulation and linear stability theory. Boundary layer instabilities excited by periodic oscillations are utilized to control the size and length of the separation bubble and to make it finally disappear when desired. Unlike traditional vortex g...

The impact of skewness angle on the effectiveness vortex generators (VGs) and behavior streamwise vortices flow separation behind a backward-facing ramp (BFR) with sharp transition were experimentally investigated using surface oil visualizations, planar stereoscopic particle image velocimetry measurements. Counter/corotating generated by set boundary layer-type rectangular VG located upstream ...

A series of wind tunnel tests were carried out to determine the effect shark scale-based vortex generators (SSVG) on a NACA 0015 symmetrical airfoil’s aerodynamic characteristics. Three different sets SSVG with varying geometrical parameters, such as chord length, amplitude, and wavelength, designed fabricated using 3D printing. The models blended baseline airfoil. experiments performed over te...