@article{Abdoune_Djamel_Redouane_Karima_2021, title={Convective heat transfer and fluid flow characteristics in fin and oval-tube heat exchanger}, volume={15}, url={https://journal.ump.edu.my/jmes/article/view/4044}, DOI={10.15282/jmes.15.2.2021.01.0626}, abstractNote={<p>The forced convective heat transfer behavior of a turbulent air flow, steady and Newtonian over a fin and oval-tube heat exchanger has been examined numerically. Where, the effect of the tube tilt angle (<em>α</em>) on the heat transfer coefficient and the friction factor was tested. The inclination angle of the oval-tubes going from 0° (Baseline case) to 90° with a step of 10°. The fluid flows and heat transfer characteristics are presented for Reynolds numbers ranging from 3.000 to 12.000. All investigations are carried out with the help of the <em>CFD ANSYS</em> Fluent. Heat transfer coefficient results in the term of the Nusselt number are validated with the available experimental data and a maximum deviation of 9 % is observed. Reasonable agreement is found. The obtained results show that the tube’s inclination angle of 20° is the best design which significantly removes the hot spots behind the tubes, thus giving an increase in the heat transfer coefficient of 13 % compared to the baseline case. In addition, useful correlations are developed to predict Nusselt number and friction factor in the fin and oval-tube heat exchanger.</p>}, number={2}, journal={Journal of Mechanical Engineering and Sciences}, author={Abdoune, Yamina and Djamel, Sahel and Redouane, Benzeguir and Karima, Alem}, year={2021}, month={Jun.}, pages={7936–7947} }