Faizan Ijaz
Wang Bo Qijun Zhao
This work outlines a specific approach to the isolation of aerodynamic and physical factors towards enhancing flow control in the dynamic stall of rotating wings, a concern in rotor craft, wind turbines and UAVs. Employing a combination of CFD and ML, this research work focuses uniquely on aerodynamics of the aircraft by eliminating the impact of physical parameters like angular velocity, pitch rate, and angle of attack from lift, drag, and pressure distribution. This way, the research offers a finer view of the physical processes involved in vortex shedding, boundary layer development, and stall inception, which are critical to predicting and mitigating stall phenomena. The ML component uses data from CFD simulations to control parameters and provide real-time reaction to the aerodynamic changes. The results of this study show that, if these decoupled parameters are adjusted separately, one can control the stall onset and achieve up to 20% delay in lift hysteresis and control the flow stability across a broad range of operating points. This decoupling concept enables the accurate application of adjustment actions like adaptive pitch control and optimized rotation rates to the corresponding aerodynamic and physical conditions. The proposed approach provides a realistic solution for improving energy efficiency and operational reliability in the RWs subjected to high dynamic loads. This work not only contributes to the knowledge of dynamic stall phenomena in rotating wings but also opens the way to develop more robust and effective flow control strategies in aerospace and renewable energy applications.
Faizan Ijaz Wang Bo Zhao Qijun “Decoupling Aerodynamic and Physical Parameters for Enhanced Flow Control in Rotating Vol. 12 Issue 05 PP. 105-116 May 2025. https://doi.org/10.34259/ijew.25.1205105116.
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