Optimal white-noise stochastic forcing for linear models of turbulent channel flow
In the present study an optimisation problem is formulated to determine the forcing of an
eddy-viscosity-based linearised Navier–Stokes model in channel flow at is the friction …
eddy-viscosity-based linearised Navier–Stokes model in channel flow at is the friction …
An empirical model of noise sources in subsonic jets
Modelling the noise emitted by turbulent jets is made difficult by their acoustic inefficiency:
only a tiny fraction of the near-field turbulent kinetic energy is propagated to the far field as …
only a tiny fraction of the near-field turbulent kinetic energy is propagated to the far field as …
Model-based spectral coherence analysis
S Abootorabi, A Zare - Journal of Fluid Mechanics, 2023 - cambridge.org
Recent data-driven efforts have utilized spectral decomposition techniques to uncover the
geometric self-similarity of dominant motions in the logarithmic layer, and thereby validate …
geometric self-similarity of dominant motions in the logarithmic layer, and thereby validate …
Composition of resolvents enhanced by random sweeping for large-scale structures in turbulent channel flows
T Wu, G He - Journal of Fluid Mechanics, 2023 - cambridge.org
Composition of resolvents enhanced by random sweeping for large-scale structures in turbulent
channel flows Page 1 J. Fluid Mech. (2023), vol. 956, A31, doi:10.1017/jfm.2023.39 Composition …
channel flows Page 1 J. Fluid Mech. (2023), vol. 956, A31, doi:10.1017/jfm.2023.39 Composition …
Flow control of a plunging cylinder based on resolvent analysis
We design an open-loop active flow control for separated flows around a plunging circular
cylinder based on resolvent analysis. The cylinder is plunging at a Strouhal number of 0.36 …
cylinder based on resolvent analysis. The cylinder is plunging at a Strouhal number of 0.36 …
A resolvent-based prediction framework for incompressible turbulent channel flow with limited measurements
A new resolvent-based method is developed to predict the space–time properties of the flow
field. To overcome the deterioration of the prediction accuracy with increasing distance …
field. To overcome the deterioration of the prediction accuracy with increasing distance …
Suppression of oscillatory fluid forces in cylinder wake: Optimal jet control position designed through resolvent analysis
The flow around a circular cylinder is a typical case of unstable separated flow, and
controlling its stability has long been a focus of flow control research. This study proposes an …
controlling its stability has long been a focus of flow control research. This study proposes an …
Eduction of acoustics-related coherent structures from Schlieren images of supersonic twin jets by coupling Doak's decomposition and SPOD
This work proposes a methodology to improve the extraction of coherent structures
associated with the generation of acoustic fluctuations in turbulent jets from high-speed …
associated with the generation of acoustic fluctuations in turbulent jets from high-speed …
Linstab2D: stability and resolvent analysis of compressible viscous flows in MATLAB
We present LinStab2D, an easy-to-use linear stability analysis MATLAB tool capable of
handling complex domains, performing temporal and spatial linear stability, and resolvent …
handling complex domains, performing temporal and spatial linear stability, and resolvent …
Spectral decomposition of wall-attached/detached eddies in compressible and incompressible turbulent channel flows
M Yu, CX Xu, JQ Chen, PX Liu, YL Fu, XX Yuan - Physical Review Fluids, 2022 - APS
In the present study, we propose a spectral decomposition method to segregate the
contributions of wall-attached/detached and self-similar/non-self-similar eddies by taking …
contributions of wall-attached/detached and self-similar/non-self-similar eddies by taking …