Analysis of Lundgren's matched asymptotic expansion approach to the Kármán-Howarth equation using the eddy damped quasinormal Markovian turbulence closure

Autor: Marcello Meldi, John Christos Vassilicos

Publikováno v: Physical Review Fluids
Physical Review Fluids, American Physical Society, 2021, 6 (6), ⟨10.1103/PhysRevFluids.6.064602⟩
Physical Review Fluids, 2021, 6 (6), ⟨10.1103/PhysRevFluids.6.064602⟩

International audience; 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 case of the classical dissipation scaling by turb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::357064fb981b0eae4b692953e9dee62b
https://hal.archives-ouvertes.fr/hal-03380923/file/Meldi_Vassilicos_2021.pdf

A pressure-corrected Immersed Boundary Method for the numerical simulation of compressible flows

Autor: Marcello Meldi, Julien Favier, H. Riahi, E. Goncalves, Eric Serre

Publikováno v: Journal of Computational Physics
Journal of Computational Physics, 2018, 374, pp.361-383. ⟨10.1016/j.jcp.2018.07.033⟩
Journal of Computational Physics, Elsevier, 2018, 374, pp.361-383. ⟨10.1016/j.jcp.2018.07.033⟩

International audience; The development of an improved new IBM method is proposed in the present article. This method roots in efficient proposals developed for the simulation of incompressible flows, and it is expanded for compressible configuration

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5223792c37a988cfbad7462cb131c40
https://doi.org/10.1016/j.jcp.2018.07.033

A multigrid/ensemble Kalman Filter strategy for assimilation of unsteady flows

Autor: Marcello Meldi, Guillaume Lehnasch, Gabriel Moldovan, Laurent Cordier

A sequential estimator based on the Ensemble Kalman Filter for Data Assimilation of fluid flows is presented in this research work. The main feature of this estimator is that the Kalman filter update, which relies on the determination of the Kalman g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f1a4c929cae2a40d2944db2b34f176f

Reynolds number effect on the velocity derivative flatness factor

Autor: Marcello Meldi, Lyazid Djenidi, R. A. Antonia

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2018, 856, pp.426-433. ⟨10.1017/jfm.2018.717⟩
Journal of Fluid Mechanics, 2018, 856, pp.426-433. ⟨10.1017/jfm.2018.717⟩

This paper investigates the effect of a finite Reynolds number (FRN) on the flatness factor ($F$) of the velocity derivative in decaying homogeneous isotropic turbulence by applying the eddy damped quasi-normal Markovian (EDQNM) method to calculate a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8189d83f1735d00f253b04cbc9e5a50e
https://hal-amu.archives-ouvertes.fr/hal-02114615/document

Augmented Prediction of Turbulent Flows via Sequential Estimators Sensitivity of State Estimation to Density of Time Sampling for Available Observation

Autor: Marcello Meldi

Publikováno v: Flow, Turbulence and Combustion
Flow, Turbulence and Combustion, Springer Verlag (Germany), 2018, 101 (2), pp.389-412. ⟨10.1007/s10494-018-9967-6⟩
Flow, Turbulence and Combustion, 2018, 101 (2), pp.389-412. ⟨10.1007/s10494-018-9967-6⟩

International audience; A sensitivity analysis of new methodological approaches for state estimation (Meldi and Poux J. Comput. Phys. 347, 207-234, 2017) is proposed in this manuscript. The performance of the estimator is tested via the analysis of a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d80102f816df85dc7bae242b5771fa2
https://hal-amu.archives-ouvertes.fr/hal-02114575