953 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR96 papers
- Institut PprimeFR94 papers
- Université de PoitiersFR90 papers
- Université Paris-SaclayFR11 papers
- Instituto Tecnológico de AeronáuticaBR8 papers
- Université Paris-SudFR8 papers
- University of MichiganUS8 papers
- Laboratoire d'Informatique pour la Mécanique et les Sciences de l'IngénieurFR7 papers
- Université Paris Sciences et LettresFR7 papers
- École Centrale ParisFR6 papers
- École PolytechniqueFR6 papers
- Sorbonne UniversitéFR6 papers
44 papers · 1 filter
VIVALDy: A Hybrid Generative Reduced-Order Model for Turbulent Flows, Applied to Vortex-Induced Vibrations
Niccolò Tonioni, Lionel Agostini, Franck Kerhervé +2
Developing reduced-order models applicable to fluid-dynamics problems involving complex geometries and different flow conditions remains a critical challenge for turbulent flows. T…
Slip Length in Shear Flow Over a Textured Surface
Nicolas Elie, Pascal Jolly, Romain Lucas-Roper +1
Hydrophobic textured surfaces are studied for their low wettability and their capacity to create a 'slippery' fluid on the surface during lubrication. To this end, the flow between…
Improved convergence of the spectral proper orthogonal decomposition through time shifting
Diego C. P. Blanco, Eduardo Martini, Kenzo Sasaki +1
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 forc…
LES-informed resolvent-based estimation of turbulent pipe flow
Filipe Ramos do Amaral, André Valdetaro Gomes Cavalieri
A resolvent-based methodology is employed to obtain spatio--temporal estimates of turbulent pipe flow from probe measurements of wall shear-stress fluctuations. Direct numerical si…
Optimized parametric inference for the inner loop of the Multigrid Ensemble Kalman Filter
Gabriel Moldovan, Guillaume Lehnasch, Laurent Cordier +1
Essential features of the Multigrid Ensemble Kalman Filter (G. Moldovan, G. Lehnasch, L. Cordier, M. Meldi, A multigrid/ensemble Kalman filter strategy for assimilation of unsteady…
On the preferred flapping motion of round twin jets
Daniel Rodriguez, Michael N. Stavropoulos, Petronio A. S. Nogueira +2
Linear stability theory (LST) is often used to model the large-scale flow structures in the turbulent mixing region and near pressure field of high-speed jets. For perfectly-expand…
An empirical model of noise sources in subsonic jets
Ugur Karban, Benjamin Bugeat, Aaron Towne +3
Modelling the noise emitted by turbulent jets is made difficult by their acoustic inefficiency: only a tiny fraction of the near-field turbulent kinetic energy is propagated to the…
Solutions to aliasing in time-resolved flow data
Ugur Karban, Eduardo Martini, Peter Jordan +2
Avoiding aliasing in time-resolved flow data obtained through high fidelity simulations while keeping the computational and storage costs at acceptable levels is often a challenge.…
Resolvent-based tools for optimal estimation and control via the Wiener-Hopf formalism
Eduardo Martini, Junoh Jung, André V. G. Cavalieri +2
The application of control tools to complex flows frequently requires approximations, such as reduced-order models and/or simplified forcing assumptions, where these may be conside…
Shock-induced cavitation and wavefront analysis inside a water droplet
Luc Biasiori-Poulanges, Hazem El-Rabii
The objective of the present study is to develop a basic understanding of the interaction of shock waves with density inhomogeneities. We consider here the particular instance of a…
The triple Leidenfrost effect: preventing drops coalescence on a hot plate
F. Pacheco-Vazquez, J. L. Palacio-Rangel, R. Ledesma-Alonso +1
We report on the collision-coalescence dynamics of drops in Leidenfrost state using liquids with different physicochemical properties. Drops of the same liquid deposited on a hot c…
Including acoustic modes in the vortex-sheet eigenbasis of a jet
Matteo Mancinelli, Eduardo Martini, Vincent Jaunet +1
Vortex-sheet models of jets are widely used to describe the dynamics of modes, such as the Kelvin-Helmholtz instability and guided acoustic waves. However, it is seldom pointed out…
Numerical investigation of three-dimensional partial cavitation in a Venturi geometry
Camille Gouin, Carlos Junqueira-Junior, Eric Goncalves da Silva +1
Sheet cavitation appears in many hydraulic applicationss and can lead to technical issues. Some fundamental outcomes such as the complex topology of 3-Dimensional cavitation pocket…
Self-similar mechanisms in wall turbulence studied using of resolvent analysis
U. Karban, E. Martini, A. V. G. Cavalieri +2
Self-similarity of wall-attached coherent structures in a turbulent channel at is explored by means of resolvent analysis. In this modelling framework, coherent structur…
Analysis of Lundgren's matched asymptotic expansion approach to the Kármán-Howarth equation using the EDQNM turbulence closure
Marcello Meldi, John Christos Vassilicos
In this paper we investigate whether the features of the non-equilibrium cascade, which have been identified in recent studies using high-fidelity tools, can be captured in the cas…
Resolvent-based modeling of turbulent jet noise
Ethan Pickering, Aaron Towne, Peter Jordan +1
Resolvent analysis has demonstrated encouraging results for modeling coherent structures in jets when compared against their data-educed counterparts from high-fidelity large-eddy…
Wavepacket Modelling of Broadband Shock-Associated Noise in Supersonic Jets
Marcus H. Wong, Peter Jordan, Igor A. Maia +4
We present a two-point model to investigate the underlying source mechanisms for broadband shock-associated noise (BBSAN) in shock-containing supersonic jets. In the model presente…
Resolvent-based estimation of turbulent channel flow using wall measurements
Filipe R. Amaral, André V. G. Cavalieri, Eduardo Martini +2
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 100…
Efficient computation of global resolvent modes
Eduardo Martini, Daniel Rodríguez, Aaron Towne +1
Resolvent analysis of the linearized Navier-Stokes equations provides useful insight into the dynamics of transitional and turbulent flows and can provide a model for the dominant…
Waves in screeching jets
Daniel Edgington-Mitchell, Tianye Wang, Petronio Nogueira +5
The interaction between various wavelike structures in screeching jets is considered via both experimental measurements and linear stability theory. Velocity snapshots of screechin…
Artificial intelligence control of a turbulent jet
Yu Zhou, Dewei Fan, Bingfu Zhang +2
An artificial intelligence (AI) control system is developed to maximize the mixing rate of a turbulent jet. This system comprises six independently operated unsteady minijet actuat…
Quantum turbulence simulations using the Gross-Pitaevskii equation: high-performance computing and new numerical benchmarks
Michikazu Kobayashi, Philippe Parnaudeau, Francky Luddens +4
This paper is concerned with the numerical investigation of Quantum Turbulence (QT) described by the Gross-Pitaevskii (GP) equation. Numerical simulations are performed using a par…
On the formation and recurrent shedding of ligaments in droplet aerobreakup
Benedikt Dorschner, Luc Biasiori-Poulanges, Kevin Schmidmayer +2
The breakup of water droplets when exposed to high-speed gas flows is investigated using both high-magnification shadowgraphy experiments as well as fully three-dimensional numeric…
Resolvent-based modelling of coherent wavepackets in a turbulent jet
Lutz Lesshafft, Onofrio Semeraro, Vincent Jaunet +2
Coherent turbulent wave-packet structures in a jet at Reynolds number 460000 and Mach number 0.4 are extracted from experimental measurements and are modeled as linear fluctuations…