Forced convection heat transfer enhancement using a coaxial wire-tube corona system

Laminar forced convection heat transfer enhancement in a coaxial wire-tube corona system is numerically examined. Governing equations were solved using the finite volume method implemented in a developed solver using the OpenFOAM platform. The proposed corona system could change the flow pattern pus...

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Bibliographic Details
Published in:Journal of electrostatics 2020-01, Vol.103, p.103415, Article 103415
Main Authors: Zehtabiyan-Rezaie, Navid, Saffar-Avval, Majid, Adamiak, Kazimierz
Format: Article
Language:English
Subjects:
Corona discharge
Electrohydrodynamics
Heat transfer enhancement
Ionic wind
Numerical simulation
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Summary:Laminar forced convection heat transfer enhancement in a coaxial wire-tube corona system is numerically examined. Governing equations were solved using the finite volume method implemented in a developed solver using the OpenFOAM platform. The proposed corona system could change the flow pattern pushing the central high-velocity flow towards the hot surface. For a specific wire length, an enhancement of 100% in heat transfer could be achieved at a Reynolds number of 600 and the applied voltage of 8 kV. Finally, considering both heat transfer enhancement and electrical power consumption, the most effective case was recommended among scenarios considered in this study. •Heat transfer enhancement by a novel coaxial wire-tube system is examined.•Effects of the Reynolds number, wire length and applied voltage are considered.•Velocity profile, flow pattern and temperature distribution are analyzed.•A maximum heat transfer enhancement of 100% is obtained.
ISSN:0304-3886
1873-5738
DOI:10.1016/j.elstat.2019.103415