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Fluids 2016, 1(2), 10; doi:10.3390/fluids1020010

Investigation of Slot-Burner Aerodynamics with Recessed-Type Nozzle Geometry

1
Faculty of Science, Engineering and Technology, Swinburne University of Technology, Victoria VIC 3122, Australia
2
Department of Mechanical Engineering, Islamic University of Technology, Gazipur-1704, Bangladesh
3
Mineral Resources, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Victoria 3168, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Asterios Pantokratoras
Received: 19 February 2016 / Revised: 21 March 2016 / Accepted: 23 March 2016 / Published: 8 April 2016
(This article belongs to the Special Issue Computational Fluid Dynamics)

Abstract

The aerodynamics of fully turbulent jets supplied from rectangular slot-burners was modelled using the Reynolds Averaged Navier–Stokes (RANS) model. Three different turbulent models were considered, such as standard k-ε, RNG k-ε and Reynolds stress turbulence models. The recessed-type nozzle geometry was investigated to determine the effect of burner geometry on jet development. The slot-burner was based on physical models, which were designed to be representative of typical burner geometries found in tangentially-fired coal boilers. The study was validated against the physical models. The detailed flow field obtained from the simulations was used to explain the aerodynamic development of jets in such burners. It was found that the addition of a recess section to the nozzle geometry introduced significant changes to the flow due to complex pressure and mixing fields being set up inside the recess, which altered the jets once they exited into the open atmosphere. View Full-Text
Keywords: slot burner; coal combustion; nozzle design; turbulence model; jet aerodynamics; computational fluid dynamics (CFD) slot burner; coal combustion; nozzle design; turbulence model; jet aerodynamics; computational fluid dynamics (CFD)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bhuiyan, A.A.; Karim, M.R.; Hart, J.T.; Witt, P.J.; Naser, J. Investigation of Slot-Burner Aerodynamics with Recessed-Type Nozzle Geometry. Fluids 2016, 1, 10.

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