Abstract
Heat transfer and friction factors of fully developed turbulent flows in the stationary rectangular divergent channel with parallel angled ribbed have been investigated experimentally. Four different parallel angled ribs (α = 30, 45, 60, and 90-deg) are placed to the channel’s two opposite walls as well as to the channel’s one sided wall only, respectively. The ribbed rectangular divergent channel has the inclination angle of 0.72deg at the left and right walls, corresponding to Dho/Dhi =1.16. The divergent channel has the cross-section of100 x75 mm2 at inlet and 100 x 100 mm2 at exit. The ribbed walls are manufactured with a fixed rib height (e) =10 mm and the ratio of rib spacing (p) to height (e) = 10.
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