[HTML][HTML] Bristled-wing design of materials, microstructures, and aerodynamics enables flapping flight in tiny wasps

Y Jiang, P Zhao, X Cai, J Rong, Z Dong, H Chen, P Wu… - Iscience, 2022 - cell.com
Parasitoid wasps of the smallest flying insects with bristled wings exhibit sophisticated flight
behaviors while challenging biomechanical limitations in miniaturization and low-speed flow …

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 …

Stabilized motion of a freely falling bristled disk

M Lee, SH Lee, D Kim - Physics of Fluids, 2020 - pubs.aip.org
Several tiny insects have peculiar porous wings composed of many bristles and perform an
interesting passive flight known as parachuting. Despite numerous studies on the freefall of …

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 …

Deformation of porous flexible strip in low and moderate Reynolds number flows

M Pezzulla, EF Strong, F Gallaire, PM Reis - Physical Review Fluids, 2020 - APS
We present results from a combined experimental and numerical investigation of the fluid-
structure interaction of cantilevered porous flexible strips, towed through a fluid bath. We …

On the effect of a penetrating recirculation region on the bifurcations of the flow past a permeable sphere

M Ciuti, GA Zampogna, F Gallaire, S Camarri… - Physics of …, 2021 - pubs.aip.org
We study the flow past a permeable sphere modeled using homogenization theory. The flow
through the porous medium is described by the Darcy law, in which the permeability …

Von Kármán vortex street past a permeable circular cylinder: Two-dimensional flow and dynamic-mode-decomposition-based secondary stability analysis

F Caruso Lombardi, A Bongarzone, GA Zampogna… - Physical Review …, 2023 - APS
We investigate the wake structure and the three-dimensional stability of the two-dimensional
von Kármán vortex street developing in the wake of a permeable circular cylinder. The flow …

Fluid–structure interactions of bristled wings: the trade-off between weight and drag

Y Luna Lin, M Pezzulla… - Journal of the Royal …, 2023 - royalsocietypublishing.org
The smallest flying insects often have bristled wings resembling feathers or combs. We
combined experiments and three-dimensional numerical simulations to investigate the trade …

Fluid-driven Fractures in Heterogeneous Environments

SS Tanikella - 2024 - escholarship.org
Fluid-driven subsurface fractures interact with a variety of heterogeneous elements in the
surrounding environment, including fluid-filled pores, material discontinuities, and other …

A Numerical Study of the Effect of Surface Coverage on the Filtration Performance of Hair Arrays

SS Tanikella, ND Jones… - ASME …, 2021 - asmedigitalcollection.asme.org
Biological filtration systems offer a sustainable alternative to existing engineered solutions.
In this computational work, we seek to optimize the surface coverage by an array of hairs to …