抄録
Direct numerical simulation was performed for flow and heat transfer in a channel with two ribs attached to one wall. Inlet condition was the fully developed flow, and spatially establishing behavior of field values was obtained. Heat transfer is deteriorated in stagnated flow regimes in the gap between two ribs and behind the second rib, while good performance of heat transfer occurs at upper surface of ribs and at the wall downstream from back side of the second rib. There is discrepancy between reattachment point and peak Nusselt number, but the latter is consisted with turbulence promotion and thus enhanced transfer of heat from the wall.
