J. Robinet

Publications97
h-index19
Citations1,138
Highly Influential Citations69
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Investigation of the roughness-induced transition: global stability analyses and direct numerical simulations
Abstract The linear global instability and resulting transition to turbulence induced by an isolated cylindrical roughness element of height $h$ and diameter $d$ immersed within an incompressible…
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The minimal seed of turbulent transition in the boundary layer
Abstract This paper describes a scenario of transition from laminar to turbulent flow in a spatially developing boundary layer over a flat plate. The base flow is the Blasius non-parallel flow…
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Spatially convective global modes in a boundary layer
The linear stability of a weakly nonparallel flow, the case of a flat plate boundary layer, is revisited by a linear global stability approach where the two spatial directions are taken as…
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Model reduction for fluids using frequential snapshots
TLDR
It is shown that this method is efficient to perform POD and balanced proper orthogonal decomposition reduced-order models in both globally stable and unstable flows through two numerical examples: the flow over a backward-faci...
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3D global optimal forcing and response of the supersonic boundary layer
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Intermittency and transition to chaos in the cubical lid-driven cavity flow
Transition from steady state to intermittent chaos in the cubical lid-driven flow is investigated numerically. Fully three-dimensional stability analyses have revealed that the flow experiences an…
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On the dynamics of axisymmetric turbulent separating/reattaching flows
The present work focuses on the intrinsic properties of an axisymmetric separating/reattaching flow. A numerical simulation of a compressible flow over a cylinder extended by another cylinder of…
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Large-Eddy Simulation of Broadband Unsteadiness in a Shock/Boundary-Layer Interaction
The simulation of low-frequency unsteadiness in shock wave/turbulent boundary-layer interactions constitutes a challenging case insofar as very long time integrations are required to describe these…
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Sensitivity and optimal forcing response in separated boundary layer flows
The optimal asymptotic response to time harmonic forcing of a convectively unstable two-dimensional separated boundary layer on a flat plate is numerically revisited from a global point of view. By…
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Optimal wave packets in a boundary layer and initial phases of a turbulent spot
The three-dimensional global optimal dynamics of a flat-plate boundary layer is studied by means of an adjoint-based optimization in a spatial domain of long – but finite – streamwise dimension. The…
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