RT Journal Article ID 78f9e2f744c87c6f A1 Kiml, Robert A1 Mochizuki, Sadanari A1 Murata, Akira T1 Effects of Rib Height on Heat Transfer Performance Inside a High Aspect Ratio Channel with Inclined Ribs JF Journal of Enhanced Heat Transfer JO JEH(T) YR 2003 FD 2003-12-01 VO 10 IS 4 SP 431 OP 444 AB Heat transfer and pressure drop experiments were performed in a rectangular high aspect ratio channel (5:1, 45 ґ 9 mm) representing a turbine blade trailing edge cooling passage. The oblique ribs were attached to two opposing long side walls and were intended to function as secondary flow inducers as well as turbulators to improve the heat transfer of the both rib-roughened and rear (one of the short side walls) walls. The experiments were performed for three rib heights—h = 3 mm, h = 2 mm, and h = 1 mm (h-rib height)—for two rib arrangements, transverse (90°) and inclined (60°). It was verified that (1) the heat transfer enhancement on the rear wall was attributed to the rib-induced secondary flow, which carries the cold air from the passage core region toward the rear wall and enhances the heat transfer appreciably; and (2) heat transfer and pressure drop strongly deteriorate with a decreasing rib height because of the weakening of the rib-induced positive effects as a turbulence promoter and secondary flow inducer. PB Begell House LK https://www.dl.begellhouse.com/journals/4c8f5faa331b09ea,6c6e1f58370cb2c0,78f9e2f744c87c6f.html