THERMAL SCIENCE

International Scientific Journal

NUMERICAL STUDY OF THE STRUCTURE OF THERMAL PLUME IN A VERTICAL CHANNEL: EFFECT OF THE HEIGHT OF CANAL

ABSTRACT
In this paper we propose to study numerically, by means of a software Named Calculation FDS, a thermal plume evolve from a source at the entrance to of a vertical channel. In the literature, there are researchers who interested in the interaction of plume with his the confinement medium. These studies are based on the determination of the global structure of plume confined. They found that this plume consists of three distinct zones. A first zone near source (instability zone) followed by a second zone, such as the development of plume, and a third zone which is the zone of turbulence, Comparing the overall structure of the plume confined to that of the free plume, we can identify the presence of a third zone (zone of instability). The aim is firstly to determine the height of the instability zone located above of source, and secondly, to make a spectral study frequencies exhaust. Thus, effects of the geometrical parameters on frequencies of these escapements and the height an instability zone. The final aim is to establish correlations between the dimensionless numbers of Strouhal and Grashof.
KEYWORDS
PAPER SUBMITTED: 2013-01-23
PAPER REVISED: 2014-01-02
PAPER ACCEPTED: 2014-03-07
PUBLISHED ONLINE: 2014-06-15
DOI REFERENCE: https://doi.org/10.2298/TSCI130123058J
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE 1, PAGES [67 - 76]
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© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence