Flow Field Structure, Characteristics of Thermo-Hydraulic and Heat Transfer Performance Analysis in a Three Dimensions Circular Tube with Different Ball Turbulators Configurations

Journal article

Al-Obaidi, A. R. and Chaer, I. (2021). Flow Field Structure, Characteristics of Thermo-Hydraulic and Heat Transfer Performance Analysis in a Three Dimensions Circular Tube with Different Ball Turbulators Configurations. Arabian Journal for Science and Engineering. https://doi.org/10.1007/s13369-021-05943-7
AuthorsAl-Obaidi, A. R. and Chaer, I.
Abstract

This paper presents the findings from a research study using computational fluid dynamics (CFD) on the impact of different diameter Ball Tabulators Inserts (BTI) on the three-dimensional flow pattern and heat transfer characteristics within a circular tube. This analysis was carried under uniform heat flux conditions with different BTI diameters (1, 2, 3, 4, 5, 6, 7, and 8 mm). Fluid flow, pressure drop, dynamic pressure, velocity components, thermo-hydraulic, turbulent kinetic energy, and turbulent viscosity were analysed qualitatively and quantitatively. The performance evaluation results revealed that the characteristics of flow behaviour and the velocity field contours variations are closely associated with the BTI configurations. Also, the computational results indicated that the change in fluid flow velocity near the pipe wall and around the BTI is important parameters for the heat transfer enhancement as compared to that obtained without BTI under the same conditions. Moreover, using BTI presented a distinguished influence on the rate of heat transfer. Additionally, vortex flow through means of this kind of BTI is an important parameter in the enhancement of heat transfer. The use of BTI can enhance the rate of heat transfer performance by more than 46%. Furthermore, the maximum value for the PEF is found to be more than 1.03.

KeywordsFlow structure ; Thermo-hydraulic flow; Heat transfer performance; Ball turbulators; CFD
Year2021
JournalArabian Journal for Science and Engineering
PublisherSpringer
ISSN2193-567X
Digital Object Identifier (DOI)https://doi.org/10.1007/s13369-021-05943-7
Web address (URL)https://link.springer.com/content/pdf/10.1007/s13369-021-05943-7.pdf
Publication dates
Online07 Jul 2021
Publication process dates
Accepted28 Jun 2021
Deposited09 Jul 2021
Accepted author manuscript
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Open
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