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The influence of leading-edge variable camber on dynamic stall characteristics of rotor
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The influence of leading-edge variable camber on dynamic stall characteristics of rotor
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Journal Article
The influence of leading-edge variable camber on dynamic stall characteristics of rotor
2025
Overview
To study the influence mechanism of leading-edge variable camber (LEVC) technology on the dynamic stall of rotor in forward flight, a rotor flowfield simulation method is established based on the motion-embedded grid and URANS equation, in which the body-fitted grid of LEVC rotor is reconstructed by the RBF grid deformation method. The effectiveness of the mesh method and the numerical simulation method is verified by comparing the unsteady aerodynamic characteristics of the SMART rotor with trailing edge winglet. Subsequently, the effect of LEVC rotor on the unsteady aerodynamic phenomena of rotor is analyzed, and the influence mechanism of LEVC rotor on the dynamic stall is explained. The results demonstrate that the LEVC technology can significantly improve the load characteristics of blade under dynamic stall, which suppresses the dynamic stall vortex by reducing the inverse pressure gradient at the leading edge of airfoil, thereby increasing the lift on retreating blade of rotor, and inhibit the divergence of counter-torque.
Publisher
IOP Publishing
Subject
