Abstract
Heat transfer and fluid flow on the heated disc during the laminar forced convection have been investigated experimentally. The gas flow in the acrylic cylindrical pipe was laminated by the plastic honeycomb and packed bed of polystyrene. The heater was set centrally apart from the exit of the pipe. When the distance between the exit of the pipe and the heater, h, was 20mm, there was the critical line for the vortex due to the natural convection on the Re-Gr map. On the other hand, for h=mm, there was no vortex in there experimental conditions. By comparing the gas flow patterns and temperature distribution, it suggested the fluid body with high temperature was traveling along the radius direction.
