Optimal eddy viscosity for resolvent-based models of coherent structures in turbulent jets

E Pickering, G Rigas, OT Schmidt, D Sipp… - Journal of Fluid …, 2021 - cambridge.org
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 …

An invitation to resolvent analysis

LV Rolandi, JHM Ribeiro, CA Yeh, K Taira - … and Computational Fluid …, 2024 - Springer
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 …

A database for reduced-complexity modeling of fluid flows

A Towne, STM Dawson, GA Brès, A Lozano-Durán… - AIAA journal, 2023 - arc.aiaa.org
We present a publicly accessible database specifically designed to aid in the conception,
training, demonstration, evaluation, and comparison of reduced-complexity models for fluid …

Self-similar mechanisms in wall turbulence studied using resolvent analysis

U Karban, E Martini, AVG Cavalieri… - Journal of Fluid …, 2022 - cambridge.org
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 …

Resolvent-based estimation of turbulent channel flow using wall measurements

FR Amaral, AVG Cavalieri, E Martini… - Journal of Fluid …, 2021 - cambridge.org
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 …

Forcing statistics in resolvent analysis: application in minimal turbulent Couette flow

PAS Nogueira, P Morra, E Martini… - Journal of Fluid …, 2021 - cambridge.org
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 …

Resolvent modelling of near-wall coherent structures in turbulent channel flow

LI Abreu, AVG Cavalieri, P Schlatter, R Vinuesa… - International Journal of …, 2020 - Elsevier
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 …

Linear-model-based estimation in wall turbulence: improved stochastic forcing and eddy viscosity terms

V Gupta, A Madhusudanan, M Wan… - Journal of Fluid …, 2021 - cambridge.org
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 …

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 …

Scalable resolvent analysis for three-dimensional flows

A Farghadan, E Martini, A Towne - Journal of Computational Physics, 2025 - Elsevier
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 …