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Hybrid les - Review and assessment
, Perumal Nithiarasu
Published in
2007
Volume: 32
   
Issue: 5
Pages: 501 - 511
Abstract
In the late eighties and up to the beginning of nineties computation of turbulent flows is mostly dominated by RANS (Reynolds Averaged Navier-Stokes Simulation) type modelling. During the last few years URANS (Unsteady RANS) and LES (Large Eddy Simulation) type of approaches have been attempted with some success. Yet, there have been many difficulties when LES is applied to practical engineering problems and to high Reynolds number flows as energy dissipating eddies become really small and mesh resolution required for a reasonably resolved LES approaches that of DNS (Direct Numerical Simulation). An alternative solution suggested was to combine RANS and LES, which in general referred to as Hybrid LES. There have been many proposals for combining RANS and LES in different ways. In this article, some of the issues involved in performing hybrid LES reported in the recent literature is briefly reviewed. © Printed in India.
About the journal
JournalSadhana - Academy Proceedings in Engineering Sciences
ISSN02562499
Open AccessYes
Concepts (8)
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    HYBRID LES
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    PRACTICAL ENGINEERING PROBLEMS
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    UNSTEADY RANS
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    Computer simulation
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    Energy dissipation
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    Large eddy simulation
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    Reynolds equation
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    Turbulent flow