Physical models and vortex dynamics of swimming and flying: a review
D Zhang, JD Zhang, WX Huang - Acta Mechanica, 2022 - Springer
The swimming of aquatic animals and flying of insects and birds have fascinated physicists
and biologists for more than a century. In this regard, great efforts have been made to …
and biologists for more than a century. In this regard, great efforts have been made to …
Mechanism of autorotation flight of maple samaras (Acer palmatum)
SJ Lee, EJ Lee, MH Sohn - Experiments in fluids, 2014 - Springer
Some winged seeds exhibit autorotation flight during their descent to migrate far away from
their parent trees by using oncoming wind. The reduced descent speed of autorotating …
their parent trees by using oncoming wind. The reduced descent speed of autorotating …
Kinematics and dynamics of the auto-rotation of a model winged seed
Numerical simulations of the auto-rotation of a model winged seed are presented. The
calculations are performed by solving simultaneously the Navier–Stokes equations for the …
calculations are performed by solving simultaneously the Navier–Stokes equations for the …
Design of a biomimetic wing from maple samara and investigation of the aerodynamic performance
The morphological structure and airborne behavior of maple samaras have attracted
increasing attention due to their potential use in wind turbines and air vehicles. This study …
increasing attention due to their potential use in wind turbines and air vehicles. This study …
A numerical study of the flow around a model winged seed in auto-rotation
In this study the flow around a winged-seed in auto-rotation is characterized using direct
numerical simulations (DNS) at Reynolds number in the range 80–240, based on the …
numerical simulations (DNS) at Reynolds number in the range 80–240, based on the …
Kinematic responses of an autorotating samara to concentrated crosswind
ABSTRACT A single-winged maple seed (samara) is dispersed laterally by a crosswind in
contrast to simply descending straight down (zero dispersion) in quiescent air. This article …
contrast to simply descending straight down (zero dispersion) in quiescent air. This article …
On the trajectory of leading-edge vortices under the influence of Coriolis acceleration
E Limacher, C Morton, D Wood - Journal of Fluid Mechanics, 2016 - cambridge.org
Leading-edge vortices (LEVs) can form and remain attached to a rotating wing indefinitely,
but the mechanisms of stable attachment are not well understood. Taking for granted that …
but the mechanisms of stable attachment are not well understood. Taking for granted that …
On the distribution of leading-edge vortex circulation in samara-like flight
E Limacher, DE Rival - Journal of Fluid Mechanics, 2015 - cambridge.org
As an abstraction of natural samara flight, steadily rotating plates in a free-stream flow have
been studied. Particle image velocimetry on span-normal planes has been conducted to …
been studied. Particle image velocimetry on span-normal planes has been conducted to …
Experimental study into the effects of pitch and coning angles on the flight performance of the natural samara
BK Jung, D Rezgui - Royal Society Open Science, 2024 - royalsocietypublishing.org
Using their light wing and through the use of a leading-edge vortex (LEV), autorotating
samaras can generate high lift while descending at extremely low speeds. But the flight …
samaras can generate high lift while descending at extremely low speeds. But the flight …
Scaling law for the lift force of autorotating falling seeds at terminal velocity
We provide a scaling law for the lift force of autorotating falling seeds at terminal velocity to
describe the relation among the lift force, seed geometry and terminal descending and …
describe the relation among the lift force, seed geometry and terminal descending and …