Optimal eddy viscosity for resolvent-based models of coherent structures in turbulent jets
Response modes computed via linear resolvent analysis of a turbulent mean-flow field have
been shown to qualitatively capture characteristics of the observed turbulent coherent …
been shown to qualitatively capture characteristics of the observed turbulent coherent …
Lift-up, Kelvin–Helmholtz and Orr mechanisms in turbulent jets
Three amplification mechanisms present in turbulent jets, namely lift-up, Kelvin–Helmholtz
and Orr, are characterized via global resolvent analysis and spectral proper orthogonal …
and Orr, are characterized via global resolvent analysis and spectral proper orthogonal …
A database for reduced-complexity modeling of fluid flows
We present a publicly accessible database specifically designed to aid in the conception,
training, demonstration, evaluation, and comparison of reduced-complexity models for fluid …
training, demonstration, evaluation, and comparison of reduced-complexity models for fluid …
The generation of screech tones by shock leakage
D Edgington-Mitchell, J Weightman, S Lock… - Journal of Fluid …, 2021 - cambridge.org
The mechanism underpinning the generation of screech tones has remained an open
question for many years. In this paper, direct experimental observations of the shock …
question for many years. In this paper, direct experimental observations of the shock …
Spectral proper orthogonal decomposition analysis of the turbulent wake of a disk at Re= 50 000
The coherent structures in the turbulent wake of a disk at a moderately high Reynolds
number (Re) of 50 000 are examined using spectral proper orthogonal decomposition …
number (Re) of 50 000 are examined using spectral proper orthogonal decomposition …
Efficient global resolvent analysis via the one-way Navier–Stokes equations
Resolvent analysis is a powerful tool for modelling and analysing transitional and turbulent
flows and, in particular, for approximating coherent flow structures. Despite recent …
flows and, in particular, for approximating coherent flow structures. Despite recent …
Forcing statistics in resolvent analysis: application in minimal turbulent Couette flow
An analysis of the statistics of the nonlinear terms in resolvent analysis is performed in this
work for turbulent Couette flow at Reynolds number 400. Data from a direct numerical …
work for turbulent Couette flow at Reynolds number 400. Data from a direct numerical …
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 …
Time-and frequency-domain spectral proper orthogonal decomposition of a swirling jet by tomographic particle image velocimetry
X Zeng, Y Zhang, C He, Y Liu - Experiments in Fluids, 2023 - Springer
This study investigated the performance of proper orthogonal decomposition (POD), discrete
Fourier transformation (DFT), time-domain spectral proper orthogonal decomposition (td …
Fourier transformation (DFT), time-domain spectral proper orthogonal decomposition (td …
Scalable resolvent analysis for three-dimensional flows
Resolvent analysis is a powerful tool for studying coherent structures in turbulent flows.
However, its application beyond canonical flows with symmetries that can be used to …
However, its application beyond canonical flows with symmetries that can be used to …