Zobrazeno 1 - 10
of 225
pro vyhledávání: '"Cavalieri, A. V. G."'
Publikováno v:
Phys. Rev. Fluids 8, 073902. Published 14 July 2023
Reactive flow control has been shown as a promising tool to improve, among other aspects, the aerodynamic characteristics of an aircraft. This paper focuses on the use of reactive flow control to attenuate Tollmien-Schlichting (TS) waves over a wing
Externí odkaz:
http://arxiv.org/abs/2402.11063
Autor:
Audiffred, Diego B. S., Cavalieri, André V. G., Maia, Igor A., Martini, Eduardo, Jordan, Peter
We present an experimental study of reactive control of turbulent jets. We target axisymmetric disturbances associated with coherent structures, which are known to underpin the peak sound radiation of turbulent jets. We first consider a forced jet fl
Externí odkaz:
http://arxiv.org/abs/2402.10860
Publikováno v:
Journal of Fluid Mechanics. 2024;979:A31
Large-eddy simulations of a flat-plate boundary layer, without a leading edge, subject to multiple levels of incoming free stream turbulence are considered in the present work. Within an input-output model where non-linear terms of the incompressible
Externí odkaz:
http://arxiv.org/abs/2402.10306
Publikováno v:
Journal of Fluid Mechanics, vol. 950, p. A9, 2022
Spectral proper orthogonal decomposition (SPOD) is an increasingly popular modal analysis method in the field of fluid dynamics due to its specific properties: a linear system forced with white noise should have SPOD modes identical to response modes
Externí odkaz:
http://arxiv.org/abs/2312.06057
Autor:
Maia, Igor A., Cavalieri, André V. G.
We study generalised quasilinear (GQL) approximations applied to turbulent plane Couette flow. The GQL framework is explored in conjunction with a Galerkin reduced-order model (ROM) recently developed by Cavalieri & Nogueira (Phys. Rev. Fluids 7, L10
Externí odkaz:
http://arxiv.org/abs/2311.14585
The low-frequency modal and non-modal stability characteristics of an incompressible, pressure-gradient-induced turbulent separation bubble (TSB) are investigated with the objective of studying the mechanism responsible for the low-frequency contract
Externí odkaz:
http://arxiv.org/abs/2311.13446
The widest spanwise scales in turbulent channel flows are studied through the use of three periodic channel-flow simulations at friction Reynolds number $\mathrm{Re}_{\tau}=550$. The length and height of the channels are the same in all cases ($L_x/h
Externí odkaz:
http://arxiv.org/abs/2307.03063
Plane Couette flow at Re=1200 (based on the channel half-height and half the velocity difference between the top and bottom plates) is investigated with a spatial domain designed to retain only two spanwise integral length scales. In this system, the
Externí odkaz:
http://arxiv.org/abs/2306.16944
Coherent structures are found in many different turbulent flows and are known to drive self-sustaining processes in wall turbulence. Identifying the triadic interactions which generate coherent structures can provide insights beyond what is possible
Externí odkaz:
http://arxiv.org/abs/2301.01078
Reduced-order models were derived for plane Couette flow using Galerkin projection, with orthonormal basis functions taken as the leading controllability modes of the linearised Navier-Stokes system for a few low wavenumbers. Resulting Galerkin syste
Externí odkaz:
http://arxiv.org/abs/2207.06808