TY - JOUR
T1 - Second law analysis of rectangular channels with square pin-fins
AU - Ara, O. N.
AU - Yapc, S.
AU - Ylmaz, M.
AU - Pekdemir, T.
PY - 2001/7
Y1 - 2001/7
N2 - This paper presents heat transfer and friction characteristics, and the second law analysis of the convective heat transfer through a rectangular channel with square cross-sectional pin-fins attached over a flat surface. Various clearance ratios (C/H) and interfin distance ratios (Sx/D) were used, and optimum pin-fin arrays that minimize entropy generation were determined. It was found that Nu number based on the projected area decreased with increasing Sx/D and C/H, whereas Nu based on the total heat transfer area increased with increasing Sx/D and with decreasing C/H. The friction factor was found to decrease with increasing Sx/D and C/H. Smaller entropy generation numbers were obtained at lower Reynolds number, higher clearance ratio, and higher interfin spacing ratio. © 2001 Elsevier Science Ltd.
AB - This paper presents heat transfer and friction characteristics, and the second law analysis of the convective heat transfer through a rectangular channel with square cross-sectional pin-fins attached over a flat surface. Various clearance ratios (C/H) and interfin distance ratios (Sx/D) were used, and optimum pin-fin arrays that minimize entropy generation were determined. It was found that Nu number based on the projected area decreased with increasing Sx/D and C/H, whereas Nu based on the total heat transfer area increased with increasing Sx/D and with decreasing C/H. The friction factor was found to decrease with increasing Sx/D and C/H. Smaller entropy generation numbers were obtained at lower Reynolds number, higher clearance ratio, and higher interfin spacing ratio. © 2001 Elsevier Science Ltd.
UR - https://www.scopus.com/pages/publications/0035389115
U2 - 10.1016/S0735-1933(01)00266-4
DO - 10.1016/S0735-1933(01)00266-4
M3 - Article
SN - 0735-1933
VL - 28
SP - 617
EP - 630
JO - International Communications in Heat and Mass Transfer
JF - International Communications in Heat and Mass Transfer
IS - 5
ER -