On the controlled evolution for wingtip vortices of a flapping wing model at bird scale
Sign Up to like & getrecommendations! Published in 2021 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2020.106460
Abstract: Abstract The reduction of wingtip vortices is a critical and challenging task for aircraft wing-design. Inspired by the wingtip morphology of soaring birds, Whitcomb created winglets to reduce the drag of commercial airplanes significantly. As… read more here.
Keywords: evolution; wingtip vortices; flapping wing; tip vortices ... See more keywords
The wake structure of a propeller operating upstream of a hydrofoil
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2020.680
Abstract: Abstract Large eddy simulations are presented on the wake flow of a notional propeller (the INSEAN E1658), upstream of a NACA0020 hydrofoil of infinite spanwise extent, mimicking propeller–rudder interaction. Results show that the flow physics… read more here.
Keywords: suction; tip vortices; propeller; wake ... See more keywords
Instability of the tip vortices shed by an axial-flow turbine in uniform flow
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2021.433
Abstract: Large-eddy simulation is utilized to reproduce the instability of the tip vortices shed from the blades of an axial-flow turbine. The oscillations of their helical trajectories trigger mutual interaction between them. This accelerates the process… read more here.
Keywords: tip vortices; vortices shed; tip; instability tip ... See more keywords
Evolution and instability of the tip vortices behind a yawed wind turbine
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2025.10389
Abstract: Abstract Yaw control can effectively enhance wind farm power output, but the vorticity distribution and coherent structures in yawed turbine wakes remain poorly understood. We propose a physical model capable of accurately predicting tip vortex… read more here.
Keywords: wind; evolution instability; vortices behind; instability tip ... See more keywords
Near-field wake dynamics of propellers affected by double-sided barnacles attachment
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0237079
Abstract: This study employs the improved delayed detached-eddy simulation method for detailed numerical simulations to investigate the impact of barnacle attachment on the hydrodynamic performance of propellers. The simulations were conducted on an unstructured grid comprising… read more here.
Keywords: field; wake dynamics; field wake; dynamics propellers ... See more keywords