Large eddy simulation of swirling jet in a bluff-body burner

Yohei Fujimoto, Yuzo Inokuchi, Nobuhiko Yamasaki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The large eddy simulation (LES) is applied to an unconfined swirling flow of an air surrounding a bluff-body having a central jet of air, and the complicated flowfield that involves the recirculation and vortex breakdown is investigated. The Smagorinsky model is used as the sub-grid scale model. The results of the present numerical simulation are compared with the experimental data of the mean and stochastic root mean square (RMS) variations of two velocity components. Although the inflow conditions are specified in a simple manner, the obtained numerical results are in reasonable agreement with the experiments, except for a part of RMS variation values near downstream of the bluff body. The present numerical calculations can successfully reproduce the two characteristics of the flow, i.e., an upstream recirculation zone established just downstream of the burner plane and the additional recirculation zone established at the more downstream location.

Original languageEnglish
Pages (from-to)28-33
Number of pages6
JournalJournal of Thermal Science
Volume14
Issue number1
DOIs
Publication statusPublished - Jan 1 2005

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bluff bodies
swirling
burners
large eddy simulation
vortex breakdown
air
scale models
upstream
breakdown
grids
simulation

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Large eddy simulation of swirling jet in a bluff-body burner. / Fujimoto, Yohei; Inokuchi, Yuzo; Yamasaki, Nobuhiko.

In: Journal of Thermal Science, Vol. 14, No. 1, 01.01.2005, p. 28-33.

Research output: Contribution to journalArticle

Fujimoto, Yohei ; Inokuchi, Yuzo ; Yamasaki, Nobuhiko. / Large eddy simulation of swirling jet in a bluff-body burner. In: Journal of Thermal Science. 2005 ; Vol. 14, No. 1. pp. 28-33.
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