A turbulence dissipation inhomogeneity scaling in the wake of two side-by-side square prisms

Autor: C. Cuvier, J.G. Chen, Jean-Marc Foucaut, John Christos Vassilicos, Yasar Ostovan

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2021, 924, pp.A4. ⟨10.1017/jfm.2021.599⟩
Journal of Fluid Mechanics, 2021, 924, pp.A4. ⟨10.1017/jfm.2021.599⟩

International audience; We experimentally study how the turbulent energy dissipation rate scales in the cross-stream direction of turbulent wake flows generated by two side-by-side square prisms. We consider three different such turbulent flows with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b415d372c9896360953327450b1ebb8b
https://doi.org/10.1017/jfm.2021.599

The non-equilibrium dissipation scaling in large Reynolds number turbulence generated by rectangular fractal grids

Autor: Paul J. K. Bruce, Christophe Cuvier, John Christos Vassilicos, Shaokai Zheng, Jean-Marc Foucaut, J. M. R. Graham

Publikováno v: Physical Review Fluids
Physical Review Fluids, 2021

In this paper, the turbulence fields generated by a group of modified fractal grids, referred to as the rectangular fractal grids (RFGs), are documented and discussed. The experiments were carried out using hot-wire anemometry in three facilities at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b01233b8c5a2dbf9123043a1e53a67ca
https://hal.archives-ouvertes.fr/hal-03217070/document

Formation of power-law scalings of spectra and multiscale coherent structures in the near-field of grid-generated turbulence

Autor: John Christos Vassilicos, Tatsuya Yasuda, Susumu Goto

Publikováno v: Physical Review Fluids
Physical Review Fluids, American Physical Society, 2020, 5 (1), ⟨10.1103/PhysRevFluids.5.014601⟩
Physical Review Fluids, 2020, 5 (1), ⟨10.1103/PhysRevFluids.5.014601⟩

International audience; We investigate the streamwise evolutions of energy and pressure spectra along the shear-layer region of very near-field grid-generated turbulence. The energy and pressure spectra evolve significantly in this near field. The sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a56051cfbdc99ee44138a412a6ca1c01
https://doi.org/10.1103/physrevfluids.5.014601

The energy cascade at the turbulent/non-turbulent interface

Autor: Yi Zhou, John Christos Vassilicos

Publikováno v: Physical Review Fluids
Physical Review Fluids, 2020
Physical Review Fluids, American Physical Society, 2020

International audience; Interscale energy transfers at the vicinity of the turbulent/non-turbulent interface are from small to large scales in directions close to the interface's tangent plane where motions are predominantly stretching, but from larg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e69b31520b590fbd28e39089a0654666
https://hal.science/hal-02865311/document

Heat transfer from a flat plate in inhomogeneous regions of grid-generated turbulence

Autor: Gianfrancesco Melina, Stavros Tavoularis, Paul J. K. Bruce, Jovan Nedic, John Christos Vassilicos

Publikováno v: International Journal of Heat and Mass Transfer. 123:1068-1086

Experiments on the convective heat transfer from a flat plate, vertically mounted and parallel to the flow in a wind tunnel, were carried out via Infra-Red thermography and hot-wire anemometry. The Reynolds number based on the inflow velocity and on

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49f9063ed7cdc56a69be8f9aa6083956
https://doi.org/10.1016/j.ijheatmasstransfer.2018.03.019