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Hybrid LES-RANS modelling: a one-equation SGS model combined with ak-? model for predicting recirculating flows
- Source :
- International Journal for Numerical Methods in Fluids. 43:1003-1018
- Publication Year :
- 2003
- Publisher :
- Wiley, 2003.
-
Abstract
- A hybrid LES-RANS modelling approach is proposed. RANS is used in the near wall regions (y ≤ 60), and the turbulence is modelled with a κ-ω model. LES is used in the remaining part of the flow, and the SGS turbulence is modelled with a one-equation κ sgs model. The same continuity and momentum equations are solved throughout the domain, the only difference being that the turbulent viscosity is taken from the κ-ω model in the RANS region, and from the one-equation κ sgs model in the LES region. The new modelling approach is applied to two incompressible flow test cases. They are fully developed flow in a plane channel and the flow over a 2D-hill in a channel
- Subjects :
- Turbulence
Plane (geometry)
Applied Mathematics
Mechanical Engineering
Computational Mechanics
Mechanics
Domain (mathematical analysis)
Computer Science Applications
Physics::Fluid Dynamics
Momentum
Classical mechanics
Flow (mathematics)
Mechanics of Materials
Incompressible flow
Flow conditioning
Reynolds-averaged Navier–Stokes equations
Mathematics
Subjects
Details
- ISSN :
- 10970363 and 02712091
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- International Journal for Numerical Methods in Fluids
- Accession number :
- edsair.doi...........96df8eadf534594b8e4cfb60a123dde0