Shahrood University of Technology Journal of Solid and Fluid Mechanics 2251-9475 3 4 2014 12 22 experimental investigation of the effect of dielectric barrier on induced velocity of still air boundary layer with comparison of corona wind and AC-DC dielectric barrier discharge plasma experimental investigation of the effect of dielectric barrier on induced velocity of still air boundary layer with comparison of corona wind and AC-DC dielectric barrier discharge plasma 103 110 244 10.22044/jsfm.2014.244 FA Gholamreza Tathiri Faculty member Islamic Azad university Journal Article 2012 12 11 Boundary layer flow control, is one of the most important issues of aerodynamic.Generally, the purpose of flow control, is control of the boundary layer separation. Nowadays, researchers have considered the using of active electrohydrodynamic actuators due to the access and easy installation, no need for special repairs, very short response time and very low energy consumption. In this paper, using a similar geometry, the effects of dielectric barrier, on induced velocity in still air boundary layer, in the corona wind of direct and alternating fields was studied. The results showed that the using of dielectric barrier in the field of direct current, the flow velocity in the boundary layer is reduced, while with the dielectric barrier in the field of alternating current, greater speeds in boundary layer could be reached. with detection of smoke injection technique, it was found that the barrier dielectric has no effect on the flow pattern,but this pattern is in the direction of electric field in the direct current and is tangential to the boundary layer in the alternating current.finally, the using of the alternating current field, in addition to installing in the exact location due to small size of them, can cause to achieve higher speeds is still air in the boundary layer. Boundary layer flow control, is one of the most important issues of aerodynamic.Generally, the purpose of flow control, is control of the boundary layer separation. Nowadays, researchers have considered the using of active electrohydrodynamic actuators due to the access and easy installation, no need for special repairs, very short response time and very low energy consumption. In this paper, using a similar geometry, the effects of dielectric barrier, on induced velocity in still air boundary layer, in the corona wind of direct and alternating fields was studied. The results showed that the using of dielectric barrier in the field of direct current, the flow velocity in the boundary layer is reduced, while with the dielectric barrier in the field of alternating current, greater speeds in boundary layer could be reached. with detection of smoke injection technique, it was found that the barrier dielectric has no effect on the flow pattern,but this pattern is in the direction of electric field in the direct current and is tangential to the boundary layer in the alternating current.finally, the using of the alternating current field, in addition to installing in the exact location due to small size of them, can cause to achieve higher speeds is still air in the boundary layer. https://jsfm.shahroodut.ac.ir/article_244_b24784339f0da0080fd90ac187935046.pdf