15 citations · 26 across the 10 of their papers we have counts for
10 papers · 1 filter
State estimation of Rayleigh-Bénard convection with reduced-order models
Enrique Flores-Montoya, André F. C. da Silva, André V. G. Cavalieri
In this work, we develop a state estimation framework for two-dimensional Rayleigh-Bénard (RB) convection that combines a stable Galerkin reduced-order model (ROM) with an extended…
Coherent structures in axis-switching elliptical jets
Naia Suzuki, André V. G. Cavalieri, Daniel M. Edgington-Mitchell +1
Coherent structures in aspect ratio 2, axis-switching elliptical jets are studied using direct numerical simulation (DNS). Three different datasets are studied with varying near-no…
Galerkin reduced order model for two-dimensional Rayleigh-Bénard convection
Enrique Flores-Montoya, André V. G. Cavalieri
In this work, Galerkin projection is used to build reduced-order models (ROM) for two-dimensional Rayleigh-Bénard (RB) convection with no-slip walls. We compare an uncoupled projec…
On the applicability of the actuator line method for unsteady aerodynamics
Elías Alva, Vitor G. Kleine, André V. G. Cavalieri
A linear theory for unsteady aerodynamic effects of the actuator line method (ALM) was developed. This theory is validated using two-dimensional ALM simulations, where we compute t…
Identification of structures driving trailing-edge noise. Part II -- Numerical investigation
Zhenyang Yuan, Simon Demange, Kilian Oberleithner +2
The aim of the present work is to investigate the mechanisms of broadband trailing-edge noise generation to improve prediction tools and control strategies. We focus on a NACA 0012…
Identification of structures driving trailing-edge noise. Part I -- Experimental investigation
Simon Demange, Zhenyang Yuan, Simon Jekosch +4
Trailing-edge (TE) noise is the main contributor to the acoustic signature of flows over airfoils. It originates from the interaction of turbulent structures in the airfoil boundar…
Airfoil tonal noise reduction by roughness elements Part I -- Experimental investigation
Elías Alva, Zhenyang Yuan, Tiago B. Araújo +3
Laminar separation bubbles around airfoils lead to the growth of instability waves, which enhances to acoustic scattering at the trailing-edge, forming a feedback loop that produce…
Airfoil Tonal Noise Reduction by Roughness Elements. Part II -- Direct Simulations
Zhenyang Yuan, Elías Alva, Tiago B. de Araújo +2
In a combined experimental and numerical effort we investigate airfoil tonal noise generation and reduction. The means of noise control are streak generators in form of cylindrical…
On the Low-Frequency Dynamics of Turbulent Separation Bubbles
C. Cura, A. Hanifi, A. V. G. Cavalieri +1
The low-frequency modal and non-modal stability characteristics of an incompressible, pressure-gradient-induced turbulent separation bubble (TSB) are investigated with the objectiv…
Coherent pressure structures in turbulent channel flow
F. R. Amaral, A. V. G. Cavalieri
Most of the studies on pressure fluctuations in wall-bounded turbulent flows aim at obtaining statistics as power spectra and scaling laws, especially at the walls. In the present…