סמינר מחלקתי של שי מונאט
Experimental optimization of a 3-element high-lift system with active flow control
Monday April 28th 2025 at 14:00
Wolfson Building of Mechanical Engineering, Room 206
Abstract:
The Seminar will present the experimental investigation of the efficiency of Active Flow Control (AFC) as a means of enhancing the aerodynamic performance of aircraft wings. The overarching goal is to demonstrate its economic viability and potential for widespread use in the aviation industry. By actively generating several forms of oscillatory blowing and suction, the airflow around various wing models is manipulated to augment the aerodynamic characteristics of the airfoils.
The research encompasses three experimental studies, each employing wind tunnel experiments to assess the effectiveness of AFC in diverse scenarios. The first study experimentally examines the feasibility of replacing a conventional leading-edge slat with an AFC system that integrates suction and oscillatory blowing, aiming to achieve comparable aerodynamic benefits with reduced weight and complexity. The second study focuses on mitigating local flow separation induced by integrating ultra-high bypass ratio engines with the wing, utilizing suction and pulsed blowing to redirect and re-energize the flow in the affected region. The final study experimentally investigates the potential of AFC for controlling flutter, a detrimental aeroelastic phenomenon, by implementing a closed-loop control system based on fluidic oscillators.
The findings of these studies collectively highlight the capability of AFC to increase lift, delay stall, and mitigate flow separation, thereby contributing to improved aerodynamic efficiency and reduced fuel consumption in aircraft. The research also includes an in-depth discussion on the energy efficiency of the AFC systems, emphasizing the importance of minimizing energy consumption for practical implementation. The thesis underscores the promise of AFC as a practical and effective solution for enhancing the performance and sustainability of future aircraft designs, supported by concrete experimental evidence. The research also delves into the complexities of implementing AFC in real-world scenarios, addressing system integration, control algorithms, and scalability challenges. The thesis concludes by highlighting the potential of AFC to revolutionize aircraft design and operation, enabling the development of more efficient, quieter, safer, and environmentally friendly aircraft.
Bio:
Shay Monat is a PhD student in the Meadow Aerodynamics Laboratory under the former guidance of Prof. Avi Seifert (R.I.P) and currently under the guidance of Prof. Alex Liberzon and Prof. Oksana Stalnov.
