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VOLAVÝ, J. FORMAN, M. JÍCHA, M.
Original Title
Large Eddy Simulation: subgrid-scale models
Type
journal article - other
Language
English
Original Abstract
Subgrid modelling in Large Eddy Simulation is proposed and analysed. The main idea of Large Eddy Simulation is to separate the eddies containing large energy from small dissipative eddies (scales). The large eddies are solved explicitly, the small ones are modelled. For modelling of these smallest scales so called subgrid-scale models are used. The paper contains a short description of the most used subgrid-scale models, particularly Smagorinsky model, dynamic Smagorinsky model, subgrid kinetic energy model, dynamic subgrid kinetic energy model and mixed model. These models are consequently tested on the case of a turbulent channel flow. The calculations are performed using an open-source code OpenFOAM. The results are compared with the DNS data.
Keywords
Large Eddy Simulation, subgrid-scale models, channel flow
Authors
VOLAVÝ, J.; FORMAN, M.; JÍCHA, M.
RIV year
2011
Released
1. 11. 2011
Publisher
Institute of Thermomechanics AS CR
Location
Praha
ISBN
0001-7043
Periodical
Acta Technica ČSAV
Year of study
Number
3
State
Czech Republic
Pages from
271
Pages to
280
Pages count
10
BibTex
@article{BUT75172, author="Jaroslav {Volavý} and Matěj {Forman} and Miroslav {Jícha}", title="Large Eddy Simulation: subgrid-scale models", journal="Acta Technica ČSAV", year="2011", volume="2011", number="3", pages="271--280", issn="0001-7043" }