Effects of V-shaped rib arrays on turbulent heat transfer and friction of fully developed flow in a square channel
作者： S.C. Lau , R.T. Kukreja , R.D. Mcmillin
DOI: 10.1016/0017-9310(91)90140-A
关键词: Flow conditioning 、 Communication channel 、 Materials science 、 Thermodynamics 、 Turbulent heat transfer 、 Heat transfer 、 Mechanics 、 Power (physics) 、 Rib cage 、 Airfoil 、 Turbine 、 Mechanical engineering 、 Condensed matter physics 、 Fluid Flow and Transfer Processes
摘要: Abstract This study examines turbulent heat transfer and friction characteristics of fully developed flow air in a square channel which two opposite walls are roughened with aligned arrays V-shaped ribs. The rib-roughened models the internal cooling passages modern gas turbine airfoils. anglesof-attack rib 45°, 60°, 90° (same as full ribs), 120°, 135°. 60° ribs p e = 10 have highest ribbed wall smooth for given rate, per unit pumping power. They recommended airfoil cooling, replacing 45° or
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