THERMAL SCIENCE

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Amin Lotfiani

,

Shahram Khalilarya

EXTENDED SEMI-ANALYTICAL MODEL FOR THE PREDICTION OF FLOW AND CONCENTRATION FIELDS IN A TANGENTIALLY-FIRED FURNACE

ABSTRACT
Tangentially-fired furnaces (TFF) are one of the modified types of furnaces which have become more attractive in the field of industrial firing systems in recent years. Multi-zone thermodynamic models can be used to study the effect of different parameters on the operation of TFF readily and economically. Flow and mixing sub-model is a necessity in multi-zone models. In the present work, the semi-analytical model previously established by the authors for the prediction of the behavior of coaxial turbulent gaseous jets is extended to be used in a single-chamber TFF with square horizontal cross-sections and to form the flow and mixing sub-model of the future multi-zone model for the simulation of this TFF. A computer program is developed to implement the new extended model. Computational fluid dynamics (CFD) simulations are carried out to validate the results of the new model. In order to verify the CFD solution procedure, a turbulent round jet injected into cross flow is simulated. The calculated jet trajectory and velocity profile are compared with other experimental and numerical data and good agreement is observed. Results show that the present model can provide very fast and reasonable predictions of the flow and concentration fields in the TFF of interest.
KEYWORDS
tangentially-fired furnace, semi-analytical model, multi-zone model, turbulent mixing, diffusion combustion, CFD
PAPER SUBMITTED: 2012-11-17
PAPER REVISED: 2013-01-16
PAPER ACCEPTED: 2013-01-28
PUBLISHED ONLINE: 2013-04-13
DOI REFERENCE: https://doi.org/10.2298/TSCI121117027L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2013, VOLUME 17, ISSUE Issue 4, PAGES [1233 - 1243]
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Extended semi-analytical model for the prediction of flow and concentration fields in a tangentially-fired furnace

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, 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