Investigation of characteristic scales in variable density turbulent jets using a second-order model - Ineris - Institut national de l'environnement industriel et des risques Access content directly
Journal Articles Physics of Fluids Year : 1994

Investigation of characteristic scales in variable density turbulent jets using a second-order model

R. Schiestel
  • Function : Author
Fabien Anselmet
Muriel Amielh
L. Fulachier
  • Function : Author

Abstract

This paper is concerned with the investigation of characteristic turbulent scales in circular and plane turbulent free jets with large density variations. The numerical study has been performed with a second-order turbulence model to confirm analytical relations about density and Reynolds number effects on dynamic and scalar turbulence scales derived from requirements of pseudo-self-preservation. The present results explain and quantify trends previously reported from visualizations of variable density turbulent jets performed by Pitts (NBSIR Report No. 86-3340, U.S. Department of Commerce, 1986). It is clearly shown that the parameter relevant for the evolution of these scales is the momentum flux Mj . In addition, the influence of this quantity on small scales is found to be larger than that on large scales.
Not file

Dates and versions

ineris-00962572 , version 1 (21-03-2014)

Identifiers

Cite

Emmanuel Ruffin, R. Schiestel, Fabien Anselmet, Muriel Amielh, L. Fulachier. Investigation of characteristic scales in variable density turbulent jets using a second-order model. Physics of Fluids, 1994, 6 (8), pp.2785-2799. ⟨ineris-00962572⟩

Collections

INERIS
28 View
0 Download

Share

Gmail Facebook Twitter LinkedIn More