Skip to Main content Skip to Navigation
Theses

Simulation numérique d'écoulements turbulents en rotation, confinement et forçage à l'aide d'une méthode de pénalisation

Abstract : A volume-penalization method is implemented in a tri-periodic pseudo-spectral code. The numerical scheme is studied and the method is tested and validated thanks to benchmarks involving linear anisotropic effects (propagation and reflection of inertial waves or internal gravity waves) or the impact of vortical structures on a penalized plane. This numerical tool is then applied to rotating turbulent flows confined in a cylindrical geometry. The global effects of confinement are observed (small-scale anisotropy) as well as near-wall local effects (modification of the pdfs , vertical elongation of the large turbulent structures, etc). Finally, the penalization method is used in order to force the turbulence in a von Kármán swirling flow context. The generated flows are studied in detail and compared to previous theoretical works. Several geometries for the blades are tested and the resulting flows exhibit significantly different structures for each shape of the blades.
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00783702
Contributor : Abes Star :  Contact
Submitted on : Friday, February 1, 2013 - 3:07:41 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:06 PM
Long-term archiving on: : Monday, June 17, 2013 - 6:02:12 PM

File

TH_T2295_cjause.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00783702, version 1

Citation

Clément Jause Labert. Simulation numérique d'écoulements turbulents en rotation, confinement et forçage à l'aide d'une méthode de pénalisation. Autre. Ecole Centrale de Lyon, 2012. Français. ⟨NNT : 2012ECDL0020⟩. ⟨tel-00783702⟩

Share

Metrics

Record views

508

Files downloads

3598