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Numerical solution of three-dimensional rectangular submerged jets with the evidence of the undisturbed region of flow

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posted on 14.10.2016 by Matteo Angelino, Andrea Boghi, Fabio Gori
The evolution of turbulent rectangular submerged free jets has been investigated numerically with a two-dimensional (2D) approach by the present authors and, by using the large eddy simulations (LES) at several Reynolds numbers. The average numerical results confirmed the presence of the undisturbed region of flow (URF) located between the slot exit and the beginning of the potential core region (PCR) previously observed experimentally at the University of Rome “Tor Vergata” by Gori and coworkers. The 2D study of the present authors carried out under the conditions previously investigated in the literature, showed that the URF has a self-similar behavior, and proposed a new law for the evolution of the momentum. The present paper extends the LES to three-dimensional (3D) rectangular submerged free jets, in the range from Re = 5,000 to Re = 40,000, showing that the self-similar behavior of URF is also present in the 3D numerical simulations, as well as in the PCR and in the fully developed region (FDR).

Funding

This project has been supported by CINECA/CASPUR with grant number std12-038.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

Numerical Heat Transfer, Part A: Applications

Citation

ANGELINO, M., BOGHI, A. and GORI, F., 2016. Numerical solution of three-dimensional rectangular submerged jets with the evidence of the undisturbed region of flow. Numerical Heat Transfer, Part A: Applications, 70 (8), pp. 815-830.

Publisher

© Taylor and Francis

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

15/06/2016

Publication date

2016-09-20

Notes

This is an Accepted Manuscript of an article published by Taylor & Francis in Numerical Heat Transfer, Part A: Applications on 20th September 2016, available online: http://www.tandfonline.com/10.1080/10407782.2016.1214494.

ISSN

1040-7782

Language

en

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