Abstract
High freestream turbulence levels have been shown to greatly augment the heat transfer on a gas turbine airfoil. To better understand these effects, this study has examined the effects elevated freestream turbulence levels have on the boundary layer development along a stator vane airfoil. Low freestream turbulence measurements (0.6%) were performed as a baseline for comparison to measurements at combustor simulated turbulence levels (19.5%). A two-component LDV system was used for detailed boundary layer measurements of both the mean and fluctuating velocities on the pressure and suction surfaces. Although the mean velocity profiles appeared to be more consistent with laminar profiles, large velocity fluctuations were measured in the boundary layer along the pressure side at the high freestream turbulence conditions. Along the suction side, transition occurred further upstream due to freestream turbulence.
Original language | English (US) |
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Title of host publication | Heat Transfer; Electric Power; Industrial and Cogeneration |
Publisher | American Society of Mechanical Engineers (ASME) |
Volume | 3 |
ISBN (Print) | 9780791878521 |
DOIs | |
State | Published - Jan 1 2001 |
Event | ASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001 - New Orleans, LA, United States Duration: Jun 4 2001 → Jun 7 2001 |
Other
Other | ASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001 |
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Country/Territory | United States |
City | New Orleans, LA |
Period | 6/4/01 → 6/7/01 |
All Science Journal Classification (ASJC) codes
- Engineering(all)