Recirculation vortices of flue gases in fire-tube boiler furnace

Abstract

It is well known fact that appropriate organization of furnace aerodynamics can influence burning stability. Therefore, improving aerodynamic characteristics of the furnace is a main task in elaborating the boiler construction. For this task experimental study of three-dimensional burning flame dynamics should be performed. In this work turbulent combustion of natural gas in fire-tube boiler was simulated by means of the ANSYS Fluent software. The subject of studying was: complex of characteristics with space-time fields of the aerodynamic structure, range and aperture angle of the flame, pressure distribution, turbulent intensity and quite a number of other operation factors. The numerical computation results display the processes within the fire-tube furnace. Inertia of fuel-air jet at the furnace entrance provokes formation of axisymmetric scorching vortices, circulating to the burner slot. The article provides a method for predicting the vortex formation and evaluation of its integral characteristics, including the effect on the aerodynamics and heat transfer processes.

Original language	English
Title of host publication	Proceedings of 2014 International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9781479962211
DOIs	https://doi.org/10.1109/MEACS.2014.6986908
Publication status	Published - 15 Dec 2014
Event	2014 International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2014 - Tomsk, Russian Federation Duration: 16 Oct 2014 → 18 Oct 2014

Other

Other	2014 International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2014
Country	Russian Federation
City	Tomsk
Period	16.10.14 → 18.10.14

Keywords

aerodynamics
fire-tube boiler
furnace
Numerical simulation
recirculation
reversive flame
vortex

ASJC Scopus subject areas

Mechanical Engineering
Electrical and Electronic Engineering
Control and Systems Engineering

Access to Document

10.1109/MEACS.2014.6986908

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Recirculation vortices of flue gases in fire-tube boiler furnace. / Zavorin, A. S.; Khaustov, Sergey Alexandrovich; Zaharushkin, N. A.

Proceedings of 2014 International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 6986908.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zavorin, AS , Khaustov, SA & Zaharushkin, NA 2014, Recirculation vortices of flue gases in fire-tube boiler furnace. in Proceedings of 2014 International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2014., 6986908, Institute of Electrical and Electronics Engineers Inc., 2014 International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2014, Tomsk, Russian Federation, 16.10.14. https://doi.org/10.1109/MEACS.2014.6986908

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abstract = "It is well known fact that appropriate organization of furnace aerodynamics can influence burning stability. Therefore, improving aerodynamic characteristics of the furnace is a main task in elaborating the boiler construction. For this task experimental study of three-dimensional burning flame dynamics should be performed. In this work turbulent combustion of natural gas in fire-tube boiler was simulated by means of the ANSYS Fluent software. The subject of studying was: complex of characteristics with space-time fields of the aerodynamic structure, range and aperture angle of the flame, pressure distribution, turbulent intensity and quite a number of other operation factors. The numerical computation results display the processes within the fire-tube furnace. Inertia of fuel-air jet at the furnace entrance provokes formation of axisymmetric scorching vortices, circulating to the burner slot. The article provides a method for predicting the vortex formation and evaluation of its integral characteristics, including the effect on the aerodynamics and heat transfer processes.",

keywords = "aerodynamics, fire-tube boiler, furnace, Numerical simulation, recirculation, reversive flame, vortex",

author = "Zavorin, {A. S.} and Sergey Alexandrovich Khaustov and Zaharushkin, {N. A.}",

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AU - Zavorin, A. S.

AU - Khaustov, Sergey Alexandrovich

AU - Zaharushkin, N. A.

PY - 2014/12/15

Y1 - 2014/12/15

N2 - It is well known fact that appropriate organization of furnace aerodynamics can influence burning stability. Therefore, improving aerodynamic characteristics of the furnace is a main task in elaborating the boiler construction. For this task experimental study of three-dimensional burning flame dynamics should be performed. In this work turbulent combustion of natural gas in fire-tube boiler was simulated by means of the ANSYS Fluent software. The subject of studying was: complex of characteristics with space-time fields of the aerodynamic structure, range and aperture angle of the flame, pressure distribution, turbulent intensity and quite a number of other operation factors. The numerical computation results display the processes within the fire-tube furnace. Inertia of fuel-air jet at the furnace entrance provokes formation of axisymmetric scorching vortices, circulating to the burner slot. The article provides a method for predicting the vortex formation and evaluation of its integral characteristics, including the effect on the aerodynamics and heat transfer processes.

AB - It is well known fact that appropriate organization of furnace aerodynamics can influence burning stability. Therefore, improving aerodynamic characteristics of the furnace is a main task in elaborating the boiler construction. For this task experimental study of three-dimensional burning flame dynamics should be performed. In this work turbulent combustion of natural gas in fire-tube boiler was simulated by means of the ANSYS Fluent software. The subject of studying was: complex of characteristics with space-time fields of the aerodynamic structure, range and aperture angle of the flame, pressure distribution, turbulent intensity and quite a number of other operation factors. The numerical computation results display the processes within the fire-tube furnace. Inertia of fuel-air jet at the furnace entrance provokes formation of axisymmetric scorching vortices, circulating to the burner slot. The article provides a method for predicting the vortex formation and evaluation of its integral characteristics, including the effect on the aerodynamics and heat transfer processes.

KW - aerodynamics

KW - fire-tube boiler

KW - furnace

KW - Numerical simulation

KW - recirculation

KW - reversive flame

KW - vortex

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