NATURAL CONVECTION AT THE INTERFACE BETWEEN A VERTICAL POROUS LAYER AND AN OPEN SPACE.
The interaction by natural convection between a fluid-saturated porous medium and a fluid reservoir separated by a vertical impermeable partition is examined. The two fluid systems are maintained at different temperatures. It is shown analytically that the flow and temperature fields in the boundary layer regime consist of two fluid layers in counterflow. The interface temperature is shown to increase monotonically with altitude.