HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Reports

Numerical Investigations of Turbulent Flow Past a Generic Airship

Abstract : Turbulent separated flows around an airship-like geometry (a prolate spheroid 6:1) are investigated using three turbulence modelings based on statistical and Large Eddy Simulation (LES) approaches. The turbulence models used in the simulations are a standard high Reynolds $k$-$\varepsilon$ model, a Smagorinsky LES model and a variational multiscale LES one. The flow of interest is characterized by a relatively low Mach number ($Mach =0.15$), an angle of attack set to $20^\circ$ and a Reynolds number fixed to $4´ 10^4$. The three-dimensional compressible Navier-Stokes equations equipped with the previous turbulent models are discretized by a mixed finite element/finite volume method. The simulations show that the primary longitudinal vortex is predicted by the three models, but only the VMS-LES model predicts a secondary vortical flow structure that is observed in experimental studies.
Document type :
Reports
Complete list of metadata

Cited literature [1 references]  Display  Hide  Download

https://hal.inria.fr/inria-00070551
Contributor : Rapport de Recherche Inria Connect in order to contact the contributor
Submitted on : Friday, May 19, 2006 - 8:50:16 PM
Last modification on : Wednesday, March 16, 2022 - 3:00:57 AM
Long-term archiving on: : Sunday, April 4, 2010 - 9:27:22 PM

Identifiers

  • HAL Id : inria-00070551, version 1

Collections

Citation

Kamal El Omari, Éric Schall, Bruno Koobus, Alain Dervieux. Numerical Investigations of Turbulent Flow Past a Generic Airship. [Research Report] RR-5455, INRIA. 2006, pp.22. ⟨inria-00070551⟩

Share

Metrics

Record views

170

Files downloads

183