Detail publikace

Turbulence Forcing Scheme In Physical Space Bassed On Ornstein-Uhlenbeck Process

VOLAVÝ, J. FORMAN, M. JÍCHA, M.

Originální název

Turbulence Forcing Scheme In Physical Space Bassed On Ornstein-Uhlenbeck Process

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

New turbulence forcing scheme is introduced in this work. This scheme operates in physical space. The main idea of this scheme is generating a force in every time step of simulation in particular points in the computational domain and this force is than added to momentum equations. The force is generated using Ornstein-Uhlenbeck stochastic process. The main feature of this process is that the force generated in next time step is not independent on the previous value (the Ornstein-Uhlenbeck is so called Markov process). So there is a correlation in the history of the generated force. It is suitable to use this force for generating turbulence because of this correlation. The developed forcing scheme was tested on the case of turbulent channel flow. Method for solution was Large Eddy Simulation with subgrid kinetic energy subgrid model. The results presented in this work are for low Reynolds number channel flow. For this case are the results in a good agreement with DNS data.

Klíčová slova

Turbulence forcing, Large Eddy Simulation, Channel Flow

Autoři

VOLAVÝ, J.; FORMAN, M.; JÍCHA, M.

Rok RIV

2010

Vydáno

14. 6. 2010

Nakladatel

Eccomas

Místo

Lisabon

ISBN

978-989-96778-0-7

Kniha

CFD 2010

Strany od

564

Strany do

564

Strany počet

1

BibTex

@inproceedings{BUT35484,
  author="Jaroslav {Volavý} and Matěj {Forman} and Miroslav {Jícha}",
  title="Turbulence Forcing Scheme In Physical Space Bassed On Ornstein-Uhlenbeck Process",
  booktitle="CFD 2010",
  year="2010",
  pages="564--564",
  publisher="Eccomas",
  address="Lisabon",
  isbn="978-989-96778-0-7"
}