An Experimental Investigation on the Trailing Edge Cooling of Turbine Blades

Zifeng Yang; Hui Hu

doi:10.1016/j.jppr.2012.10.007

An Experimental Investigation on the Trailing Edge Cooling of Turbine Blades

Zifeng Yang
, Hui Hu

Research output: Contribution to journal › Article › peer-review

Abstract

An experimental study was conducted to quantify the flow characteristics of the wall jets pertinent to trailing edge cooling of turbine blades. A high-resolution stereoscopic particle image velocimetry (PIV) system was used to conduct detailed flow field measurements to quantitatively visualize the evolution of the unsteady vortices and turbulent flow structures in the cooling wall jet streams and to quantify the dynamic mixing process between the cooling jet stream and the mainstream flows. The detailed flow field measurements were correlated with the adiabatic cooling effectiveness maps measured by using pressure sensitive paint (PSP) technique to elucidate underlying physics in order to explore/optimize design paradigms for improved cooling effectiveness to protect the critical portions of turbine blades from harsh environments.

Original language	English
Pages (from-to)	36-47
Number of pages	12
Journal	Propulsion and Power Research
Volume	1
Issue number	1
DOIs	https://doi.org/10.1016/j.jppr.2012.10.007
State	Published - Dec 2012
Externally published	Yes

ASJC Scopus Subject Areas

Automotive Engineering
Aerospace Engineering
Fuel Technology
Mechanical Engineering
Fluid Flow and Transfer Processes

Keywords

Pressure sensitive paint (PSP) technique
Steroscopic particle image velocimetry (PIV) measurements
Trailing edge cooling
Turbine blades
Wall slot jets

Disciplines

Aerospace Engineering
Materials Science and Engineering

Access to Document

10.1016/j.jppr.2012.10.007

An Experimental Investigation on the Trailing Edge Cooling of Turbine BladesFinal published version, 2.74 MBLicense: CC BY-NC-ND

Cite this

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title = "An Experimental Investigation on the Trailing Edge Cooling of Turbine Blades",

abstract = "An experimental study was conducted to quantify the flow characteristics of the wall jets pertinent to trailing edge cooling of turbine blades. A high-resolution stereoscopic particle image velocimetry (PIV) system was used to conduct detailed flow field measurements to quantitatively visualize the evolution of the unsteady vortices and turbulent flow structures in the cooling wall jet streams and to quantify the dynamic mixing process between the cooling jet stream and the mainstream flows. The detailed flow field measurements were correlated with the adiabatic cooling effectiveness maps measured by using pressure sensitive paint (PSP) technique to elucidate underlying physics in order to explore/optimize design paradigms for improved cooling effectiveness to protect the critical portions of turbine blades from harsh environments.",

keywords = "Pressure sensitive paint (PSP) technique, Steroscopic particle image velocimetry (PIV) measurements, Trailing edge cooling, Turbine blades, Wall slot jets",

author = "Zifeng Yang and Hui Hu",

note = "Publisher Copyright: {\textcopyright} 2012 National Laboratory for Aeronautics and Astronautics",

year = "2012",

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doi = "10.1016/j.jppr.2012.10.007",

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AB - An experimental study was conducted to quantify the flow characteristics of the wall jets pertinent to trailing edge cooling of turbine blades. A high-resolution stereoscopic particle image velocimetry (PIV) system was used to conduct detailed flow field measurements to quantitatively visualize the evolution of the unsteady vortices and turbulent flow structures in the cooling wall jet streams and to quantify the dynamic mixing process between the cooling jet stream and the mainstream flows. The detailed flow field measurements were correlated with the adiabatic cooling effectiveness maps measured by using pressure sensitive paint (PSP) technique to elucidate underlying physics in order to explore/optimize design paradigms for improved cooling effectiveness to protect the critical portions of turbine blades from harsh environments.

KW - Pressure sensitive paint (PSP) technique

KW - Steroscopic particle image velocimetry (PIV) measurements

KW - Trailing edge cooling

KW - Turbine blades

KW - Wall slot jets

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An Experimental Investigation on the Trailing Edge Cooling of Turbine Blades

Abstract

ASJC Scopus Subject Areas

Keywords

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