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 …
An invitation to resolvent analysis
Resolvent analysis is a powerful tool that can reveal the linear amplification mechanisms
between the forcing inputs and the response outputs about a base flow. These mechanisms …
between the forcing inputs and the response outputs about a base flow. These mechanisms …
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 …
Self-similar mechanisms in wall turbulence studied using resolvent analysis
Self-similarity of wall-attached coherent structures in a turbulent channel at is explored by
means of resolvent analysis. In this modelling framework, coherent structures are …
means of resolvent analysis. In this modelling framework, coherent structures are …
Resolvent-based estimation of turbulent channel flow using wall measurements
We employ a resolvent-based methodology to estimate velocity and pressure fluctuations
within turbulent channel flows at friction Reynolds numbers of approximately 180, 550 and …
within turbulent channel flows at friction Reynolds numbers of approximately 180, 550 and …
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 …
Resolvent modelling of near-wall coherent structures in turbulent channel flow
Turbulent channel flow was analysed using direct numerical simulations at friction Reynolds
numbers Re τ= 180 and 550. The databases were studied using spectral proper orthogonal …
numbers Re τ= 180 and 550. The databases were studied using spectral proper orthogonal …
Linear-model-based estimation in wall turbulence: improved stochastic forcing and eddy viscosity terms
We use Navier–Stokes-based linear models for wall-bounded turbulent flows to estimate
large-scale fluctuations at different wall-normal locations from their measurements at a …
large-scale fluctuations at different wall-normal locations from their measurements at a …
Wavelet-based resolvent analysis of non-stationary flows
E Ballouz, B Lopez-Doriga, STM Dawson… - Journal of Fluid …, 2024 - cambridge.org
This work introduces a formulation of resolvent analysis that uses wavelet transforms rather
than Fourier transforms in time. Under this formulation, resolvent analysis may extend to …
than Fourier transforms in time. Under this formulation, resolvent analysis may extend to …
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 …