Control of low Reynolds number flows by means of fluid–structure interactions

I Gursul, DJ Cleaver, Z Wang - Progress in Aerospace Sciences, 2014 - Elsevier
There is great interest in small aircraft known as Micro Air Vehicles and mini Unmanned Air
Vehicles due to the wide range of possible applications. This article reviews recent work that …

Plunging oscillations of airfoils and wings: progress, opportunities, and challenges

I Gursul, D Cleaver - AIAA Journal, 2019 - arc.aiaa.org
The vortex dynamics of thrust and lift generation for periodically plunging airfoils and finite
wings at low Reynolds numbers is reviewed. Effects of vortex lock-in phenomenon, leading …

Surging and plunging oscillations of an airfoil at low Reynolds number

J Choi, T Colonius, DR Williams - Journal of Fluid Mechanics, 2015 - cambridge.org
We investigate the forces and unsteady flow structures associated with harmonic oscillations
of an airfoil in the streamwise (surging) and transverse (plunging) directions in two …

Chordwise flexible aft-tail suppresses jet-switching by reinstating wake periodicity in a flapping foil

CL Shah, D Majumdar, C Bose… - Journal of Fluid …, 2022 - cambridge.org
The effect of a chordwise flexible aft-tail of a rigid heaving aerofoil on the dynamical
transitions of the trailing-wake is studied here. The two-way coupled fluid–solid dynamics is …

Investigation of static wings interacting with vertical gusts of indefinite length at low Reynolds numbers

C Stutz, J Hrynuk, D Bohl - Experiments in Fluids, 2022 - Springer
A novel gust generator was developed to study the interaction of wings with vertical gusts of
controllable interaction time with magnitudes up to 30% of the freestream velocity at low …

[HTML][HTML] Effect of wing planform on plunging wing aerodynamics

O Son, Z Wang, I Gursul - Journal of Fluids and Structures, 2023 - Elsevier
The unsteady aerodynamics of three plunging wings with different planform shapes was
investigated in water tunnel experiments by means of force/moment and three-dimensional …

Effects of Turbulence on NACA 0012 Airfoil Performance at Low Reynolds Number

JT Hrynuk, D Olson, C Stutz, JK Jackson - AIAA Journal, 2024 - arc.aiaa.org
THE prevalence of small uncrewed air vehicles (sUAVs) has exploded in recent years in
both the military and commercial space. While many current sUAVs being developed are of …

[HTML][HTML] On the absence of asymmetric wakes for periodically plunging finite wings

DE Calderon, DJ Cleaver, I Gursul, Z Wang - Physics of Fluids, 2014 - pubs.aip.org
It has previously been shown that, at high Strouhal numbers, oscillating airfoils can produce
deflected jets that can create very high lift-coefficients for otherwise symmetric scenarios …

Measurement and modeling of lift enhancement on plunging airfoils: A frequency response approach

MY Zakaria, HE Taha, MR Hajj - Journal of Fluids and Structures, 2017 - Elsevier
A frequency response approach is taken to model unsteady aerodynamics resulting from
plunging oscillations of an airfoil. The oscillations range covers high angles of attack (up to …

A lift formula applied to low-Reynolds-number unsteady flows

S Wang, X Zhang, G He, T Liu - Physics of Fluids, 2013 - pubs.aip.org
A lift formula for a wing in a rectangular control volume is given in a very simple and
physically lucid form, providing a rational foundation for calculation of the lift of a flapping …