Publication detail

Large Eddy Simulation: subgrid-scale models

VOLAVÝ, J. FORMAN, M. JÍCHA, M.

Original Title

Large Eddy Simulation: subgrid-scale models

English Title

Large Eddy Simulation: subgrid-scale models

Type

journal article - other

Language

en

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.

English 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

RIV year

2011

Released

01.11.2011

Publisher

Institute of Thermomechanics AS CR

Location

Praha

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",
  annote="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.",
  address="Institute of Thermomechanics AS CR",
  chapter="75172",
  institution="Institute of Thermomechanics AS CR",
  number="3",
  volume="2011",
  year="2011",
  month="november",
  pages="271--280",
  publisher="Institute of Thermomechanics AS CR",
  type="journal article - other"
}