Detailed boundary layer measurements on a turbine stator vane at elevated freestream turbulence levels

R. W. Radomsky; Karen Ann Thole

doi:10.1115/2001-GT-0169

Detailed boundary layer measurements on a turbine stator vane at elevated freestream turbulence levels

R. W. Radomsky, Karen Ann Thole

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Scopus citations

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)
Title of host publication	Heat Transfer; Electric Power; Industrial and Cogeneration
Publisher	American Society of Mechanical Engineers (ASME)
Volume	3
ISBN (Print)	9780791878521
DOIs	https://doi.org/10.1115/2001-GT-0169
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
Country	United States
City	New Orleans, LA
Period	6/4/01 → 6/7/01

All Science Journal Classification (ASJC) codes

Engineering(all)

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10.1115/2001-GT-0169

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title = "Detailed boundary layer measurements on a turbine stator vane at elevated freestream turbulence levels",

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.",

author = "Radomsky, {R. W.} and Thole, {Karen Ann}",

year = "2001",

month = jan,

day = "1",

doi = "10.1115/2001-GT-0169",

language = "English (US)",

isbn = "9780791878521",

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booktitle = "Heat Transfer; Electric Power; Industrial and Cogeneration",

publisher = "American Society of Mechanical Engineers (ASME)",

note = "ASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001 ; Conference date: 04-06-2001 Through 07-06-2001",

}

Radomsky, RW & Thole, KA 2001, Detailed boundary layer measurements on a turbine stator vane at elevated freestream turbulence levels. in Heat Transfer; Electric Power; Industrial and Cogeneration. vol. 3, American Society of Mechanical Engineers (ASME), ASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001, New Orleans, LA, United States, 6/4/01. https://doi.org/10.1115/2001-GT-0169

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AU - Radomsky, R. W.

AU - Thole, Karen Ann

PY - 2001/1/1

Y1 - 2001/1/1

N2 - 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.

AB - 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.

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BT - Heat Transfer; Electric Power; Industrial and Cogeneration

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001

Y2 - 4 June 2001 through 7 June 2001

ER -

Detailed boundary layer measurements on a turbine stator vane at elevated freestream turbulence levels

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