@ARTICLE{Ghildyal_Abhishek_A_2024,
 author={Ghildyal, Abhishek and Bisht, Vijay Singh and Bhandari, Prabhakar and Thapliyal, Subham and Kaushik, Shivasheesh and Ranakoti, Lalit and Bangari, Raghubeer Singh and Srivastav, Ayushman and Kanojia, Nikhil and Paul, Ashwarya Raj},
 volume={vol. 45},
 number={No 4 (in progress)},
 pages={189-196},
 journal={Archives of Thermodynamics},
 howpublished={online},
 year={2024},
 publisher={The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences},
 abstract={The use of different turbulators in solar air heaters can significantly impact their thermal and hydraulic performance. This study compares solar air heaters equipped with W-contoured, taper-contoured, and reverse taper-contoured turbulators. It examines heat transfer coefficients, pressure drops, velocity contours, turbulent kinetic energy contours, and thermal perfor-mance factors for these systems under varying operating conditions. The air Reynolds number ranges from 4000 to 18 000, while design parameters such as relative roughness height and relative pitch ratio remain constant for accurate comparison. The simulations were conducted with a uniform heat flux of 1200 W/m2. The W-shaped contour roughness achieved the greatest heat transfer coefficient, surpassing both the tapered and reverse tapered configurations. In terms of friction factor, the tapered contour on the absorber plate led, followed by the reverse tapered and W-shaped contours. Overall, the W-shaped contour delivered the best performance. At lower Reynolds numbers, the reverse tapered contour outperformed the tapered contour, whereas at higher Reynolds numbers, the tapered contour showed superior performance compared to the reverse tapered contour.},
 title={A comparative numerical evaluation of solar air heater performance having W-contoured, taper-contoured and reverse taper-contoured turbulators},
 type={Article},
 URL={http://journals.pan.pl/Content/133417/17_AoT_4_2024_Kaushik-698.pdf},
 doi={10.24425/ather.2024.152008},
 keywords={W-contoured, Taper-contoured, Reverse taper-contoured, Turbulent kinetic energy, Thermo-hydraulic perfor-mance},
}