57 citations · 136 across the 7 of their papers we have counts for
7 papers
On the relationship between the base pressure and the velocity in the near-wake of an Ahmed body
Bérengère Podvin, Stéphanie Pellerin, Yann Fraigneau +2
We investigate the near-wake flow of an Ahmed body which is characterized by switches between two asymmetric states that are mirrors of each other in the spanwise direction. The wo…
New estimations of the added mass and damping of two cylinders vibrating in a viscous fluid, from theoretical and numerical approaches
Romain Lagrange, Yann Fraigneau
This paper deals with the small oscillations of two circular cylinders immersed in a viscous stagnant fluid. A new theoretical approach based on an Helmholtz expansion and a bipola…
Coherent structure identification in turbulent channel flow using Latent Dirichlet Allocation
Mohamed Frihat, Bérengère Podvin, Lionel Mathelin +2
Identification of coherent structures is an essential step to describe and model turbulence generation mechanisms in wall-bounded flows. To this end we present a clustering method…
Proper Orthogonal Decomposition Analysis and Modelling of the wake deviation behind a squareback Ahmed body
Berengère Podvin, Stéphanie Pellerin, Yann Fraigneau +2
We investigate numerically the 3-D flow around a squareback Ahmed body at Reynolds number Re = 104. Proper Orthogonal Decomposition (POD) is applied to a symmetry-augmented databas…
Spatio-temporal Proper Orthogonal Decomposition of turbulent channel flow
Srikanth Derebail Muralidhar, Bérengère Podvin, Lionel Mathelin +1
An extension of Proper Orthogonal Decomposition is applied to the wall layer of a turbulent channel flow (Re τ = 590), so that empirical eigenfunctions are defined in both space an…
From linear stability analysis to three-dimensional organisation in an incompressible open cavity flow
L. R. Pastur, Y. Fraigneau, F. Lusseyran +1
Three-dimensional direct numerical simulations of an incompressible open square cavity flow are conducted. Features of the permanent (non-linear) regime together with the linear st…
Determining the Spectral Signature of Spatial Coherent Structures
L. R. Pastur, F. Lusseyran, Y. Fraigneau +1
We applied to an open flow a proper orthogonal decomposition (pod) technique, on 2D snapshots of the instantaneous velocity field, to reveal the spatial coherent structures respons…