Open Access

ARTICLE

CFD SIMULATION IN THERMAL-HYDRAULIC ANALYSIS OF AIRFLOW ON DIFFERENT ATTACK ANGLES OF ROW FLAT TUBE

Farhan Lafta Rashid^a, Sarmad Kamal Fakhrulddin^b, Muhammad Asmail Eleiwi^c, Ahmed Kadhim Hussein^d,e, Tahseen Ahmad Tahseen^f , ObaiYounis^g,h,*, Mohammed Ibrahim Ahmedⁱ

a Petroleum Eng. Dept., College of Eng., University of Kerbala, Karbala, Iraq
b Petroleum Eng. Dept., College of Eng., University of Kirkuk, Kirkuk, Iraq
c Mech. Eng. Dept., College of Eng., Tikrit University, Tikrit, Iraq
d Mechanical Engineering Department, College of Engineering, University of Babylon, Babylon City, Iraq
e College of Engineering, University of Warith Al-Anbiyaa, Karbala, Iraq
f Mech. Eng. Dept., College of Eng., University of Kirkuk, Kirkuk, Iraq
g Mechanical Engineering Department, College of Engineering in Wadi Addwasir, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, KSA
h Mechanical Engineering Department, Faculty of Engineering, University of Khartoum, Khartoum, 11111, Sudan
i Department of Mathematics, College of Education for Pure Sciences, Tikrit University, Iraq
* Corresponding author. Email: oubeytaha@hotmail.com

Frontiers in Heat and Mass Transfer 2022, 19, 1-8. https://doi.org/10.5098/hmt.19.6

Abstract

The current study numerically analyzes the heat transfer enhancement and laminar fluid flow characteristics of four flat tubes with varying attack front airflow. The heat transfer characteristics of flat tubes are investigated in terms of Reynolds number, heat fluxes, and inclination angle. Four Reynolds numbers are studied (100, 200, 300, and 400), and three heat fluxes on the surface of the tubes are (1000, 2500, 3800 W/m2 ), the inclination angle of the four flat tubes are (30o , 45o , 90o). ANSYS Fluent software v.18 discretizes and solves the governing equations using the finite volume approach across a specified control volume. According to the available data, using flat tubes increases the heat transfer in the channel. When tubes were used, the reattachment distance was reduced. When the Reynolds number is changed from 100 to 300, the heat transfer enhancement rises from 40.8 % to 55.79 % for the increase in the heat flux of 24.99 %.

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Keywords

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