Model reduction for flow analysis and control
CW Rowley, STM Dawson - Annual Review of Fluid Mechanics, 2017 - annualreviews.org
Advances in experimental techniques and the ever-increasing fidelity of numerical
simulations have led to an abundance of data describing fluid flows. This review discusses a …
simulations have led to an abundance of data describing fluid flows. This review discusses a …
Modeling lift hysteresis on pitching airfoils with a modified Goman–Khrabrov model
Wind-tunnel experiments were conducted on two symmetric airfoils with different thickness
ratios as a test of the ability of Goman–Khrabrov-type models to predict the lift coefficient …
ratios as a test of the ability of Goman–Khrabrov-type models to predict the lift coefficient …
Characterisation of unsteady separation in a turbulent boundary layer: Reynolds stresses and flow dynamics
The large-eddy simulation technique was used to investigate the dynamics of unsteady flow
separation on a flat-plate turbulent boundary layer. The unsteadiness was generated by …
separation on a flat-plate turbulent boundary layer. The unsteadiness was generated by …
Characterization of unsteady separation in a turbulent boundary layer: mean and phase-averaged flow
A spatially developing turbulent boundary layer subject to a space-and time-dependent
pressure gradient is analysed via large-eddy simulation. The unsteadiness is prescribed by …
pressure gradient is analysed via large-eddy simulation. The unsteadiness is prescribed by …
Modelling the unsteady lift of a pitching NACA 0018 aerofoil using state-space neural networks
The development of simple, low-order and accurate unsteady aerodynamic models
represents a crucial challenge for the design optimisation and control of fluid dynamical …
represents a crucial challenge for the design optimisation and control of fluid dynamical …
Alleviating unsteady aerodynamic loads with closed-loop flow control
DR Williams, R King - AIAA Journal, 2018 - arc.aiaa.org
The practical benefits and issues related to controlling unsteady loads in gusting flows with
active flow control actuators are discussed. Recent methods used to model the response of …
active flow control actuators are discussed. Recent methods used to model the response of …
Iterative maneuver optimization in a transverse gust encounter
This paper presents a framework based on either iterative simulation or iterative
experimentation for constructing an optimal, open-loop maneuver to regulate the …
experimentation for constructing an optimal, open-loop maneuver to regulate the …
An assessment of the state-of-the-art from the 2019 ARO dynamic stall workshop
MJ Smith - AIAA Aviation 2020 Forum, 2020 - arc.aiaa.org
Dynamic stall has been a limiting factor in design and operation on rotating systems within
the rotorcraft, propulsion, and sustainable energy disciplines for more than forty years …
the rotorcraft, propulsion, and sustainable energy disciplines for more than forty years …
Pressure feedback control of aerodynamic loads on a delta wing in transverse gusts
X He, DR Williams - AIAA Journal, 2023 - arc.aiaa.org
A feedback active flow control (AFC) scheme is studied for control of unsteady aerodynamic
loads that act on a generic tailless delta wing during transverse gust encounters. The …
loads that act on a generic tailless delta wing during transverse gust encounters. The …
Gust mitigation through closed-loop control. I. Trailing-edge flap response
JE Pohl, R Radespiel, B Herrmann, SL Brunton… - Physical Review …, 2022 - APS
We quantify and model the airfoil response to its pitching flap using a comprehensive
experimentally acquired database at chord-based Reynolds number 1.8× 10 6. This …
experimentally acquired database at chord-based Reynolds number 1.8× 10 6. This …