TY - JOUR
N2 - This paper presents a numerical analysis on turbulent flow and forced-convection characteristics of rectangular solar air heater tube fitted with staggered, transverse, V-shape, modern obstacles on the heated walls. Air, whose Prandtl number is 0.71, is the working fluid used, and the Reynolds number considered equal to 6×103. The governing flow equations are solved using a finite volume approach and the semi-implicit pressure linked equation (SIMPLE) algorithm. With regard to the flow characteristics, the quadratic upstream interpolation for convective kinetics differencing scheme (QUICK) was applied, and a second-order upwind scheme (SOU) was used for the pressure terms. The dynamic thermo-energy behavior of the V-shaped baffles with various flow attack angles, i.e., 50°, 60°, 70°, and 80° are simulated, analyzed, and compared with those of the conventional flat rectangular baffles with attack value of 90°. In all situations, the thermal transfer rate was found to be much larger than unity; its maximum value was around 3.143 for the flow attack angle of 90° and y = H/2.
L1 - http://www.journals.pan.pl/Content/117610/PDF/02_paper.pdf
L2 - http://www.journals.pan.pl/Content/117610
PY - 2020
IS - No 3
EP - 56
DO - 10.24425/ather.2020.134571
KW - Turbulence
KW - heat transfer
KW - Friction loss
KW - Flow attack
KW - Solar air heater tube
A1 - Menni, Younes
A1 - Chamkha, Ali J.
A1 - Zidani, Chafika
A1 - Benyoucef, Boumédiène
PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences
VL - vol. 41
DA - 2020.09.25
T1 - Analysis of thermo-hydraulic performance of a solar air heater tube with modern obstacles
SP - 33
UR - http://www.journals.pan.pl/dlibra/publication/edition/117610
T2 - Archives of Thermodynamics
ER -