Detail publikace

The effect of turbulence anisotropy on particle deposition in particle-laden channel flow

VOLAVÝ, J. FORMAN, M. JÍCHA, M.

Originální název

The effect of turbulence anisotropy on particle deposition in particle-laden channel flow

Anglický název

The effect of turbulence anisotropy on particle deposition in particle-laden channel flow

Jazyk

en

Originální abstrakt

This work contains the study of turbulent particle-laden channel flow, in which the particles experience a drag force. The method used for simulation of the liquid phase was Large Eddy Simulation using approximate deconvolution method as a subgrid model. For tracking the dispersed phase were used Lagrangian equations of motion. The effect of turbulence anisotropy on motion of particles is obtained by adding the stochastic term into particle equation of motion. This term is proportional to the turbulent kinetic energy of each velocity component. The simulations were performed for various sizes of particles. The results are compared with the previous studies of LES particle-laden flows and DNS simulation. The anisotropic model proposed in this work shows improvement in prediction of turbulent statistics of particles and concentration of particles close to the wall.

Anglický abstrakt

This work contains the study of turbulent particle-laden channel flow, in which the particles experience a drag force. The method used for simulation of the liquid phase was Large Eddy Simulation using approximate deconvolution method as a subgrid model. For tracking the dispersed phase were used Lagrangian equations of motion. The effect of turbulence anisotropy on motion of particles is obtained by adding the stochastic term into particle equation of motion. This term is proportional to the turbulent kinetic energy of each velocity component. The simulations were performed for various sizes of particles. The results are compared with the previous studies of LES particle-laden flows and DNS simulation. The anisotropic model proposed in this work shows improvement in prediction of turbulent statistics of particles and concentration of particles close to the wall.

Dokumenty

BibTex


@inproceedings{BUT74075,
  author="Jaroslav {Volavý} and Matěj {Forman} and Miroslav {Jícha}",
  title="The effect of turbulence anisotropy on particle deposition in particle-laden channel flow",
  annote="This work contains the study of turbulent particle-laden channel flow, in which the particles experience a drag force. The method used for simulation of the liquid phase was Large Eddy Simulation using approximate deconvolution method as a subgrid model. For tracking the dispersed phase were used Lagrangian equations of motion. The effect of turbulence anisotropy on motion of particles is obtained by adding   the   stochastic   term   into   particle   equation of   motion.   This   term   is   proportional   to   the  turbulent kinetic energy of each velocity component. The simulations were performed for various sizes of particles. The results are compared with the previous studies of LES particle-laden flows and DNS simulation. The anisotropic  model   proposed   in   this   work   shows   improvement   in   prediction   of   turbulent   statistics   of particles  and concentration of particles close to the wall.",
  address="Academy of Sciences of the Czech Republic",
  booktitle="Engineering Mechanics 2011",
  chapter="74075",
  edition="1",
  howpublished="print",
  institution="Academy of Sciences of the Czech Republic",
  year="2011",
  month="may",
  pages="663--666",
  publisher="Academy of Sciences of the Czech Republic",
  type="conference paper"
}