Use of eddy viscosity in resolvent analysis of turbulent channel flow
The predictions obtained from resolvent analysis with and without an eddy viscosity model
for turbulent channel flow at Re τ= 550 are compared to direct numerical simulation data to …
for turbulent channel flow at Re τ= 550 are compared to direct numerical simulation data to …
Resolvent model for aeroacoustics of trailing edge noise
This study presents a physics-based, low-order model for the trailing edge (TE) noise
generated by an airfoil at low angle of attack. The approach employs incompressible …
generated by an airfoil at low angle of attack. The approach employs incompressible …
Effect of a flight stream on subsonic turbulent jets
This study concerns a turbulent jet at Mach number M j= 0.9, subject to a uniform external
flow stream at M f= 0.15. The analysis combines experimental and numerical databases …
flow stream at M f= 0.15. The analysis combines experimental and numerical databases …
The effect of flight on a turbulent jet: coherent structure eduction and resolvent analysis
We study coherent structures in subsonic turbulent jets subject to a flight stream. A thorough
characterisation of the effects of a flight stream on the turbulent field was recently performed …
characterisation of the effects of a flight stream on the turbulent field was recently performed …
Dynamics and entrainment mechanism of the jet flows from an elliptical nozzle: Time-resolved tomographic PIV measurements
X Zeng, Y Zhang, C He, Y Liu - Experiments in Fluids, 2023 - Springer
In this study, the coherent structure dynamics and entrainment capability of elliptical jets
emitted from an elliptical nozzle with aspect ratio (AR) values of 1 (ie, a circular jet), 2, and 4 …
emitted from an elliptical nozzle with aspect ratio (AR) values of 1 (ie, a circular jet), 2, and 4 …
Linear stability and spectral modal decomposition of three-dimensional turbulent wake flow of a generic high-speed train
This work investigates the spatio-temporal evolution of coherentstructures in the wake of a
generic high-speed train. Spectral properorthogonal decomposition is used to extract energy …
generic high-speed train. Spectral properorthogonal decomposition is used to extract energy …
[HTML][HTML] Robust spectral proper orthogonal decomposition
Experimental measurements often present corrupted data and outliers that can strongly
affect the main coherent structures extracted with the classical modal analysis techniques …
affect the main coherent structures extracted with the classical modal analysis techniques …
Optimisation and modelling of eddy viscosity in the resolvent analysis of turbulent channel flows
A Ying, X Chen, Z Li, L Fu - Journal of Fluid Mechanics, 2024 - cambridge.org
The eddy-viscosity model, as initially used to model the mean Reynolds stress, has been
widely used in the linear analysis of turbulence recently by direct extension. In this study, the …
widely used in the linear analysis of turbulence recently by direct extension. In this study, the …
On the role of eddy viscosity in resolvent analysis of turbulent jets
This study presents an approach to investigate the role of eddy viscosity in linearized mean-
field analysis of broadband turbulent flows. The procedure is based on spectral proper …
field analysis of broadband turbulent flows. The procedure is based on spectral proper …
On the discrepancies between POD and Fourier modes on aperiodic domains
A Hodžić, PJ Olesen, CM Velte - Journal of Engineering Mathematics, 2024 - Springer
The application of Fourier analysis in combination with the Proper Orthogonal
Decomposition (POD) is investigated. In this approach to turbulence decomposition, which …
Decomposition (POD) is investigated. In this approach to turbulence decomposition, which …