Results 1 to 10 of about 22,938,928 (239)
An Invitation to Resolvent Analysis [PDF]
Theoretical and Computational Fluid DynamicsResolvent analysis is a powerful tool that can reveal the linear amplification mechanisms between the forcing inputs and the response outputs about a base flow.
Laura Victoria Rolandi +3 more
semanticscholar +5 more sources
Data-driven resolvent analysis [PDF]
Journal of Fluid Mechanics, 2021 Resolvent analysis identifies the most responsive forcings and most receptive states of a dynamical system, in an input–output sense, based on its governing equations.
Benjamín Herrmann +4 more
semanticscholar +6 more sources
Resolvent analysis of a finite wing in transonic flow [PDF]
Flow, 2023 Shock waves interacting with turbulent boundary layers on wings can result first in self-sustained flow unsteadiness and eventually in structural vibration.
Jelle Houtman +2 more
doaj +3 more sources
Theoretical and Applied Mechanics LettersNonlinear energy transfer is represented through eddy viscosity and stochastic forcing within the framework of resolvent analysis. Previous investigations estimate the contribution of eddy-viscosity-enhanced resolvent operator to nonlinear energy ...
Youhua Wang, Ting Wu, Guowei He
doaj +3 more sources
Stability and Convergence Analysis for Set-Valued Extended Generalized Nonlinear Mixed Variational Inequality Problems and Generalized Resolvent Dynamical Systems [PDF]
Journal of Mathematics, 2021 In this paper, we study a set-valued extended generalized nonlinear mixed variational inequality problem and its generalized resolvent dynamical system. A three-step iterative algorithm is constructed for solving set-valued extended generalized nonlinear
Iqbal Ahmad +3 more
doaj +2 more sources
Variational formulation of resolvent analysis [PDF]
Physical Review Fluids, 2022 The conceptual picture underlying resolvent analysis(RA) is that the nonlinear term in the Navier-Stokes(NS) equations provides an intrinsic forcing to the linear dynamics, a description inspired by control theory. The inverse of the linear operator, defined as the resolvent, is interpreted as a transfer function between the forcing and the velocity ...
Benedikt Barthel +2 more
openalex +5 more sources
Wavelet-based resolvent analysis of non-stationary flows [PDF]
Journal of Fluid MechanicsThis 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 turbulent flows with non-stationary mean states.
Eric Ballouz +3 more
semanticscholar +5 more sources
Triglobal resolvent analysis of swept-wing wakes [PDF]
Journal of Fluid Mechanics, 2022 Through triglobal resolvent analysis, we reveal the effects of wing tip and sweep angle on laminar separated wakes over swept wings. For the present study, we consider wings with semi-aspect ratios from $1$ to $4$, sweep angles from $0^\circ$ to $45 ...
Jean Hélder Marques Ribeiro +2 more
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Spectral proper orthogonal decomposition and its relationship to dynamic mode decomposition and resolvent analysis [PDF]
Journal of Fluid Mechanics, 2018 We consider the frequency domain form of proper orthogonal decomposition (POD) called spectral proper orthogonal decomposition (SPOD). Spectral POD is derived from a space-time POD problem for statistically stationary flows and leads to modes that each ...
Colonius, Tim +2 more
core +5 more sources
Acoustic resolvent analysis of turbulent jets [PDF]
Theoretical and Computational Fluid Dynamics, 2023 We perform a resolvent analysis of a compressible turbulent jet, where the optimisation domain of the response modes is located in the acoustic field, excluding the hydrodynamic region, in order to promote acoustically efficient modes.
Benjamin Bugeat +4 more
openalex +3 more sources