Experimental Investigation Of Thermal And Hydraulic Enhancement Convection Heat Transfer Through V And Trapezoidal Corrugated

  • Damiaa Saad Khudor Mechanical Engineering Dept., College of Eng. Al-Mustansiriya University, Baghdad, Iraq
Keywords: Forced Convection, Enhancement, Hydraulic, Corrugated channel


A steady developing fluid flow and heat transfer through a wavy corrugated square
cross-sectional passage (V-shaped and trapezoidal) was experimentally studied for a fluid with
a Prandlt number of 0.7. In the present study, the experimental investigation on the heat transfer
and flow distributions in the channel with various geometry configuration wavy plates under
constant heat flux conditions of 600 W/m² and 1100 W/m² is considered. Effects of geometry
configuration of wavy plates, wavy plate arrangements, and air flow rates on the temperature
and flow developments are considered. Reynolds number is range from (2.19 - 3.3) ×10
. The
results indicated that the enhancement of heat transfer coefficient factors are obtained from the
wavy plate structures were essentially independent of the operated heat flux. The enhancement
of heat transfer coefficient was ranged between the (1.036 to 1.062) and (1.042 to 1.066) for
heat fluxes (600) W/m² and (1100) W/m² respectively for the V-shaped. While the enhancement
of heat transfer coefficient for trapezoidal it was ranged between the (1.052 to 1.077) and (1.058
to 1.082) for heat fluxes (600) W/m² and (1100) W/m², respectively. The corrugated channel
pressure drop was higher than the plain smooth surface. The deterioration percentages of
pressure drop for the corrugated plate when compared with that of flat plain surface was ranged
between (15.4%) and (24.7%) for the V-shaped and (18.2%) and (27.5%) for trapezoidal with
heat fluxes of 600 W/m² and 1100 W/m², respectively.