Acoustic Control of Flow over NACA 2415 Airfoil at Low Reynolds Numbers

Experimental investigation on effect of partial flexibility at low aspect ratio airfoil - Part II: Installation both on suction and pressure surface

“…Air vehicles such as Unmanned Air Vehicles (UAVs) and wind turbines operate at lower Reynolds (Re) number [1][2][3][4][5]. At low Re number flows, the prediction, determination and controlling of LSB and transition phenomenon is important, because these low Re number flow phenomenon cause aerodynamic performance to decrease, blade/wing vibration to increase [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Therefore, nowadays researchers have focused experimental [18][19][20][21] and numerical [25][26][27][28] studies on the prediction, determination and controlling of LSB and transition phenomenon.…”

Multi-objective structural optimization of a wind turbine blade using NSGA-II algorithm and FSI

“…To alleviate the moment forces on a blade owing to wind force, blade mass and centrifugal force, and to decrease the negative effects of such as noise and vibration (Koca et al, 2018;Genç et al, 2018), the blade must be produced with advanced production technologies using well-developed materials. Or the flow over the wind turbine blade must be controlled (Genç et al, 2008(Genç et al, , 2016Genç, 2016, 2018; The current issue and full text archive of this journal is available on Emerald Insight at: https://www.emerald.com/insight/1748-8842.htm Genç et al, 2019Genç et al, , 2020. Thus, optimization of the structural performance of the blade is vital.…”

Passive Flow Control over an Airfoil by Control Rod at Low Reynolds Number

“…Flow control around airfoil have been applied to not only suppress of adverse effect of LSB but also enhance the aerodynamic performance of the airfoil, therefore, various flow control techniques classified into two main groups as active and passive have been studying. Although the active flow control techniques such as suction or blowing (Huang et al 2004;Yousefi and Saleh 2014), acoustic noise (Ricci et al 2007;Genç et al 2016), dielectric barrier discharge plasma actuators (Tathiri et al 2016;Khoshkhoo and Jahangirian 2016;Akbıyık et al 2017) are highly successful in the suppressing of adverse effect of the flow behavior over airfoil or enhancing of aerodynamic performance, their applications require high cost devices and external energy. On the other hand, implementation of passive flow control techniques is relatively simple and inexpensive.…”