• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Dynamique des Fluides (DynFluid)
  • View Item
  • Home
  • Dynamique des Fluides (DynFluid)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Large Eddy Simulation Requirements for the Flow over Periodic Hills

Type
Articles dans des revues avec comité de lecture
Author
GLOERFELT, Xavier
694 Laboratoire de Mecanique des Fluides et d'Acoustique [LMFA]
134975 Laboratoire de Dynamique des Fluides [DynFluid]
CINNELLA, Paola
134975 Laboratoire de Dynamique des Fluides [DynFluid]

URI
http://hdl.handle.net/10985/15555
DOI
10.1007/s10494-018-0005-5
Date
2019
Journal
Flow, Turbulence and Combustion

Abstract

Large eddy simulations are carried out for flows in a channel with streamwise-periodic constrictions, a well-documented benchmark case to study turbulent flow separation from a curved surface. Resolution criteria such as wall units are restricted to attached flows and enhanced criteria, such as energy spectra or two-point correlations, are used to evaluate the effective scale separation in the present large eddy simulations. A detailed analysis of the separation above the hill crest and of the early shear layer development shows that the delicate flow details in this region may be hardly resolved on coarse grids already at Re = 10595, possibly leading to a non monotonic convergence with mesh refinement. The intricate coupling between numerical and modeling errors is studied by means of various discretization schemes and subgrid models. It is shown that numerical schemes maximizing the resolution capabilities are a key ingredient for obtaining high-quality solutions while using a reduced number of grid points. On this respect, the introduction of a sharp enough filter is an essential condition for separating accurately the resolved scales from the subfilter scales and for removing ill-resolved structures. The high-resolution approach is seen to provide solutions in very good overall agreement with the available experimental data for a range of Reynolds numbers (up to 37000) without need for significant grid refinement.

Files in this item

Name:
DynFluid-FTC-2019-Gloerfelt.pdf
Size:
7.815Mb
Format:
PDF
Embargoed until:
2020-02-28
View/Open

Collections

  • Dynamique des Fluides (DynFluid)

Related items

Showing items related by title, author, creator and subject.

  • Investigation of high-order methods in large-eddy simulation of separated flow in a channel with periodic constrictions 
    GLOERFELT, Xavier; CINNELLA, Paola (Springer, 2018)
    In large-eddy simulations (LES), only the dynamics of large scales is computed and the effect of smaller scales is modelled. Scale separation is however difficult to establish since the low-pass filtering arises from a ...
  • Direct numerical simulations of supersonic turbulent channel flows of dense gases 
    SCIACOVELLI, Luca; CINNELLA, Paola; GLOERFELT, Xavier (Cambridge University Press (CUP), 2017)
    The influence of dense-gas effects on compressible wall-bounded turbulence is investigated by means of direct numerical simulations of supersonic turbulent channel flows. Results are obtained for PP11, a heavy fluorocarbon ...
  • Investigation of the flow dynamics in a channel constricted by periodic hills 
    GLOERFELT, Xavier; CINNELLA, Paola (American Institute of Aeronautics and Astronautics, 2015)
    The present study aims at getting better insight of the complex flow dynamics in a channel constricted by periodic hills. This is a popular test case ofer used to assess LES and RANS/LES models, which appears as a compendium ...
  • Dense-gas effects on compressible boundary-layer stability 
    GLOERFELT, Xavier; ROBINET, Jean Christophe; SCIACOVELLI, Luca; CINNELLA, Paola; GRASSO, Francesco (Cambridge University Press, 2020)
    A study of dense-gas effects on the stability of compressible boundary-layer flows is conducted. From the laminar similarity solution, the temperature variations are small due to the high specific heat of dense gases, ...
  • Large eddy simulation of turbomachinery flows using a high-order implicit residual smoothing scheme 
    HOARAU, Jean-Christophe; CINNELLA, Paola; GLOERFELT, Xavier (Elsevier, 2020)
    A recently developed fourth-order accurate implicit residual smoothing scheme (IRS4) is investigated for the large eddy simulation of turbomachinery flows, characterized by moderate to high Reynolds numbers and subject to ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales