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Keywords: dimple
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Proceedings Papers

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT15A022, June 7–11, 2021
Paper No: GT2021-60182
...Abstract Abstract In order to adapt to the high-efficiency and low-resistance performances required by the new generation of gas turbine, a new type of two-pass rectangular channel with cross bridge and oval-shaped dimple structure is proposed for internal cooling of blade mid chord region...
Proceedings Papers

Proc. ASME. GT2011, Volume 5: Heat Transfer, Parts A and B, 1447-1455, June 6–10, 2011
Paper No: GT2011-46031
... Rib turbulators can enhance the heat transfer successfully, but in most cases this is associated with large pressure loss penalties. Recently, dimple techniques become an attractive method for gas turbine blade internal cooling because dimples enhance heat transfer with low pressure penalty...
Proceedings Papers

Proc. ASME. GT2011, Volume 5: Heat Transfer, Parts A and B, 1205-1216, June 6–10, 2011
Paper No: GT2011-45449
... A comparative study was conducted to investigate the spatially-resolved local heat transfer characteristics of air turbulent flow in rectangular channels with pin fin and pin fin-dimple arrays. The spatially-resolved Nusselt numbers on the endwall surface of the pin fin and pin fin-dimple...
Topics: Heat transfer
Proceedings Papers

Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 185-195, June 14–18, 2010
Paper No: GT2010-22442
... An experimental study was conducted to investigate the flow friction and heat transfer performance in rectangular channels with pin fin-dimple and pin fin arrays in the Reynolds number range of 8200–54000. The friction factor, average Nusselt number and the overall thermal performance parameters...
Proceedings Papers

Proc. ASME. GT2002, Volume 3: Turbo Expo 2002, Parts A and B, 551-560, June 3–6, 2002
Paper No: GT2002-30220
... As the world of research seeks ways of improving the efficiency of turbomachinery, attention has recently focused on a relatively new type of internal cooling channel geometry, the dimple. Preliminary investigations have shown that the dimple enhances heat transfer with minimal pressure loss...
Proceedings Papers

Proc. ASME. GT2004, Volume 3: Turbo Expo 2004, 933-942, June 14–17, 2004
Paper No: GT2004-54204
... Heat transfer and pressure loss data have been obtained for internal flow in confined rectangular channel enhanced with two types of heat transfer augmenters: dimple concavities and combination of dimples on one side with concentrically arranged toroidal banks protruding into the channel...