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Research Article

Numerical analysis of the effect of conical turbulators to heat transfer performance of a liquid fuelled boiler 

Bilal Sungur, Bahattin Topaloglu*, Hakan Ozcan, Lutfu Namli

Department of Mechanical Engineering, Ondokuz Mayis University, Samsun, Turkey



Spray combustion,

Numerical modeling, 

Conical turbulators, 

Temperature distributions

In this study, increasing the efficiency of liquid fuelled smoke tube boilers used for domestic heating was researched. In this context, turbulators with conical geometries placed to smoke tubes of boiler and effects on flame structure and heat transfer were investigated numerically. Calculations were carried out at two dimensional axisymmetric conditions and Fluent was used as the computational fluid dynamics software. In all cases, the standard k-ε model was used for modeling the turbulent flow and the species transport model was used for modeling the combustion. Based on the results of these turbulators were evaluated for each condition. Besides, temperature and stream function distribution and pressure drop were investigated according to the arrangement of turbulators and which number of turbulator would be the most appropriate at boilers was discussed. Increasing the number of turbulators from zero to three decreased the exhaust temperatures 15 K from 365 K to 350 K, and consequently the efficiency of the boiler was increased. Yet the turbulators inserted into smoke tube increased the pressure losses insignificantly from 20 to 23.5 Pa.

 © 2017 MIM Research Group. All rights reserved.

DOI:                          Full Text


05/09/2018 Abstracted/Indexed by ProquestOur journal is started to be Absracted/Indexed by Materials Science & Engineering Database of Proquest.

15/08/2018 New Members of the RESM: New editors and editorial board members have joined the team. Our journal is stronger now with their valuable participation. See Editorial Board for new members.

07/08/2018 Citation RatioFirst 3 Volumes of our journal, with 40 articles, are cited 42 times by journals indexed in SCI-Expanded.

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