Light-driven dandelion-inspired microfliers

Y Chen, C Valenzuela, X Zhang, X Yang… - Nature …, 2023 - nature.com
In nature, many plants have evolved diverse flight mechanisms to disperse seeds by wind
and propagate their genetic information. Inspired by the flight mechanism of the dandelion …

Development and evolution of the Asteraceae capitulum

T Zhang, P Elomaa - New Phytologist, 2024 - Wiley Online Library
Asteraceae represent one of the largest and most diverse families of plants. The
evolutionary success of this family has largely been contributed to their unique …

Study of flow through and around a pair of porous cylinders covering steady and unsteady regimes

S Jamshed, R Kharbanda, AK Dhiman - Physics of Fluids, 2022 - pubs.aip.org
The present article focuses on the incompressible flow around two identical porous cylinders
for a side-by-side configuration in a closed channel. The formation of various flow patterns …

The pappus angle as a key factor in the entire separation of a vortex ring from a dandelion seed's pappus

FS Qiu, HY Qian, YM Du, CJ Li - Physics of Fluids, 2022 - pubs.aip.org
A separated vortex ring is the main aerodynamic feature of the dandelion seed which
enables its flight. However, recent research on simply modeled dandelion seeds with a …

Transport across thin membranes: Effective solute flux jump

GA Zampogna, PG Ledda, F Gallaire - Physics of Fluids, 2022 - pubs.aip.org
A model to describe the transport across membranes of chemical species dissolved in an
incompressible flow is developed via homogenization. The asymptotic matching between …

Instability and trajectories of buoyancy-driven annular disks: A numerical study

G Corsi, PG Ledda, G Vagnoli, F Gallaire… - Physical Review …, 2024 - APS
We investigate the stability of the steady vertical path and the emerging trajectories of a
buoyancy-driven annular disk as the diameter of its central hole is varied. The steady and …

Transition to turbulence in the wake of dandelion-like spoke disk

Y Dong, Y Ni, K Hu, T Zhang, Z Zhang, Y Wang - Physics of Fluids, 2023 - pubs.aip.org
In order to solve the inevitable instability problem of dandelion-like unpowered aircraft,
transient simulations are carried out for the transition to turbulence of the wake from stable to …

On the attitude stability of flying dandelion seeds

L Qin, Z Jian, Y Xu, L Ma - Physics of Fluids, 2023 - pubs.aip.org
Dandelion seeds possess a complex three-dimensional structure and a self-adapted flying
ability. To understand this fascinating flight mechanism, a three-dimensional umbrella …

Homogenization-based design of microstructured membranes: Wake flows past permeable shells

PG Ledda, E Boujo, S Camarri, F Gallaire… - Journal of Fluid …, 2021 - cambridge.org
A formal framework to characterize and control/optimize the flow past permeable
membranes by means of a homogenization approach is proposed and applied to the wake …

Permeability sets the linear path instability of buoyancy-driven disks

G Vagnoli, GA Zampogna, S Camarri… - Journal of Fluid …, 2023 - cambridge.org
The prediction of trajectories of buoyancy-driven objects immersed in a viscous fluid is a key
problem in fluid dynamics. Simple-shaped objects, such as disks, present a great variety of …