Publication result detail

Unsteady Characteristics of Sudden Expansion Flow

RUDOLF, P., LICHTNEGER, P.

Original Title

Unsteady Characteristics of Sudden Expansion Flow

English Title

Unsteady Characteristics of Sudden Expansion Flow

Type

Paper in proceedings (conference paper)

Original Abstract

Flow in asymmetric sudden expansion duct was studied using large eddy simulation incorporated in Fluent 6.2. Main focus was aimed on coherent structures and their time evolution. Numerical simulation enabled to visualize vortex shedding and spatio-temporal behavior of the vortices. Transversal velocity components were recorded and processed by Fourier transform. Dominant frequencies of the vortex shedding are close to the ones from LDA (Laser Doppler Anemometry) experiments. Spectral power densities (turbulence spectra) fit also quite well.

English abstract

Flow in asymmetric sudden expansion duct was studied using large eddy simulation incorporated in Fluent 6.2. Main focus was aimed on coherent structures and their time evolution. Numerical simulation enabled to visualize vortex shedding and spatio-temporal behavior of the vortices. Transversal velocity components were recorded and processed by Fourier transform. Dominant frequencies of the vortex shedding are close to the ones from LDA (Laser Doppler Anemometry) experiments. Spectral power densities (turbulence spectra) fit also quite well.

Keywords

sudden expansion, diffuser, coherent structure, vortex,large eddy simulation

Key words in English

sudden expansion, diffuser, coherent structure, vortex,large eddy simulation

Authors

RUDOLF, P., LICHTNEGER, P.

Released

07.06.2006

Publisher

Techsoft Engineering s.r.o., Praha

Location

Hrotovice

ISBN

80-239-7211-1

Book

12. uživatelská konference FLUENT 2006

Volume

12

Pages from

213

Pages count

7

BibTex

@inproceedings{BUT24554,
  author="Pavel {Rudolf} and Petr {Lichtneger}",
  title="Unsteady Characteristics of Sudden Expansion Flow",
  booktitle="12. uživatelská konference FLUENT 2006",
  year="2006",
  volume="12",
  number="1",
  pages="7",
  publisher="Techsoft Engineering s.r.o., Praha",
  address="Hrotovice",
  isbn="80-239-7211-1"
}