Aerodynamic design optimization: Challenges and perspectives

JRRA Martins - Computers & Fluids, 2022 - Elsevier
Antony Jameson pioneered CFD-based aerodynamic design optimization in the late 1980s.
In addition to developing the fundamental theory, Jameson implemented that theory in …

A review of recent developments in the understanding of transonic shock buffet

NF Giannelis, GA Vio, O Levinski - Progress in Aerospace Sciences, 2017 - Elsevier
Within a narrow band of flight conditions in the transonic regime, interactions between shock-
waves and intermittently separated shear layers result in large amplitude, self-sustained …

Transonic aeroelasticity: A new perspective from the fluid mode

C Gao, W Zhang - Progress in Aerospace Sciences, 2020 - Elsevier
Within the transonic regime, the aeroelastic problems exhibit many unique characteristics
compared with subsonic and supersonic cases. Although a lot of research has been carried …

Mechanism of frequency lock-in in transonic buffeting flow

C Gao, W Zhang, X Li, Y Liu, J Quan, Z Ye… - Journal of Fluid …, 2017 - cambridge.org
Frequency lock-in can occur on a spring suspended airfoil in transonic buffeting flow, in
which the coupling frequency does not follow the buffet frequency but locks onto the natural …

Reynolds-averaged Navier-Stokes study of the shock-buffet instability mechanism

M Iovnovich, DE Raveh - AIAA journal, 2012 - arc.aiaa.org
SHOCK buffet, also termed shock-induced oscillations, is a transonic flow instability
phenomenon in which a shock wave generated on a lifting surface interacts with a partially …

Buffet-onset constraint formulation for aerodynamic shape optimization

GKW Kenway, JRRA Martins - AIAA Journal, 2017 - arc.aiaa.org
High-fidelity computational modeling and optimization of aircraft configurations have the
potential to enable engineers to create more efficient designs that require fewer unforeseen …

Influence of Mach number and angle of attack on the two-dimensional transonic buffet phenomenon

NF Giannelis, O Levinski, GA Vio - Aerospace Science and Technology, 2018 - Elsevier
Within a narrow band of flight conditions in the transonic regime, self-sustained shock
oscillations that involve the interaction between shock-waves and intermittently separated …

Modal analysis of transonic shock buffet on 2D airfoil

L Poplingher, DE Raveh, EH Dowell - AIAA Journal, 2019 - arc.aiaa.org
This paper presents a study of the shock buffet phenomenon on the RA16SC1 supercritical
airfoil using the proper orthogonal decomposition (POD) and dynamic mode decomposition …

Application of a long short-term memory neural network for modeling transonic buffet aerodynamics

R Zahn, M Winter, M Zieher, C Breitsamter - Aerospace Science and …, 2021 - Elsevier
In the present work, a reduced-order modeling (ROM) framework based on a long short-term
memory (LSTM) neural network is applied for the prediction of transonic buffet …

Effect of Mach number and pitching eigenfrequency on transonic buffet onset

T Korthäuer, A Accorinti, S Scharnowski, CJ Kähler - AIAA Journal, 2023 - arc.aiaa.org
The transonic flow around an elastically suspended supercritical airfoil was experimentally
investigated in order to enhance knowledge of buffet boundary dependencies and the …