Simulation and characterization of the laminar separation bubble over a NACA-0012 airfoil as a function of angle of attack
This study examines the effects of angle of attack on the characteristics of the laminar
separation bubble (LSB), its associated low-frequency flow oscillation (LFO), and the flow …
separation bubble (LSB), its associated low-frequency flow oscillation (LFO), and the flow …
Numerical investigation of the enhancement of the aerodynamic performance for newly modified blended airfoils utilizing S809, S829, and NACA 2412 baseline …
Several important factors, including the lift-to-drag ratio, affect an airfoil's overall
performance. An airfoil's efficiency is increased by a higher lift-to-drag ratio. For years …
performance. An airfoil's efficiency is increased by a higher lift-to-drag ratio. For years …
Large-eddy simulation of blade-turbulence interaction in a cyclorotor system
Cyclorotor is a propulsion system that has multiple blades rotating around an axis parallel to
the blades' spanwise direction, alternately playing roles in both suction (upper) and blowing …
the blades' spanwise direction, alternately playing roles in both suction (upper) and blowing …
Investigation of the low-frequency oscillations in the flowfield about an airfoil
The present investigation shows that a triad of three vortices is behind the quasi-periodic self-
sustained low-frequency flow oscillation phenomenon. Large-eddy simulations are carried …
sustained low-frequency flow oscillation phenomenon. Large-eddy simulations are carried …
Numerical investigation of the low-frequency flow oscillation over a NACA-0012 aerofoil at the inception of stall
YA ElAwad, EM ElJack - International Journal of Micro Air …, 2019 - journals.sagepub.com
High-fidelity large eddy simulation is carried out for the flow field around a NACA-0012
aerofoil at Reynolds number of 9× 10 4, Mach number of 0.4, and various angles of attack …
aerofoil at Reynolds number of 9× 10 4, Mach number of 0.4, and various angles of attack …
From low-frequency oscillations to Markovian bistable stall dynamics
I Kharsansky Atallah, L Pastur, R Monchaux… - Physical Review Fluids, 2024 - APS
We study the dynamics of a fixed wing at stall in a wind tunnel by measuring the
aerodynamic forces. We report experimental evidence of a critical Reynolds number from …
aerodynamic forces. We report experimental evidence of a critical Reynolds number from …
The structure and dynamics of the laminar separation bubble
EM Eljack - Journal of Fluid Mechanics, 2024 - cambridge.org
A novel selective mode decomposition, proper orthogonal decomposition and dynamic
mode decomposition methods are used to analyse large-eddy simulation data of the flow …
mode decomposition methods are used to analyse large-eddy simulation data of the flow …
Laminar Separation Bubble and Flow Topology of NACA 0015 at Low Reynolds Number
The development of sophisticated unmanned aerial vehicles and wind turbines for daily
activities has triggered the interest of researchers. However, understanding the flow …
activities has triggered the interest of researchers. However, understanding the flow …
Large-Eddy Simulation of Low-Frequency Flow Oscillations for NACA0012 and Dynarig Sail at Large Attack Angles
Q Zeng, W Cai, J Xu - Journal of Marine Science and Engineering, 2024 - mdpi.com
Unmanned sailboats, harnessing wind for propulsion, offer great potential for extended
marine research due to their virtually unlimited endurance. The sails typically operate at high …
marine research due to their virtually unlimited endurance. The sails typically operate at high …
Uncoupled Method for Massively Parallelizable 3D Fluid-Structure Interaction Analysis and Design
Fluid-Structure Interaction (FSI) analysis is a common technique for studying aeroelastic
problems, and there have been various methods developed to enforce the pressure …
problems, and there have been various methods developed to enforce the pressure …