The switch from diffusive combustion to premixed combustion in a modern gas turbine changes the combustor exit temperature profile to a more uniform one. This will directly affect the cooling of the first stage vane especially the endwall region. A typical endwall configuration with matched nondimensional parameters to the engine condition was investigated experimentally in this study. Two endwall cooling arrangements at four different coolant to mainstream mass flow ratios (MFR) were tested in a linear cascade. Detailed measurements of pressure distribution, heat transfer coefficient, adiabatic film cooling effectiveness, and overall effectiveness of the endwall were performed. The temperature-sensitive paint (TSP) and pressure-sensitive paint (PSP) were used to acquire these parameters. The conjugate heat transfer characteristic of endwall with film cooling and impingement cooling was discussed. Moreover, the influence of coolant mass flow rate on conjugate heat transfer of endwall was analyzed. One- and two-dimensional methods for overall effectiveness prediction based on experimental data for separate parameters and correlations were also studied.
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October 2017
Research-Article
Experimental Investigation of Endwall Heat Transfer With Film and Impingement Cooling
Xueying Li,
Xueying Li
Department of Thermal Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: li_xy@mail.tsinghua.edu.cn
Tsinghua University,
Beijing 100084, China
e-mail: li_xy@mail.tsinghua.edu.cn
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Jing Ren,
Jing Ren
Department of Thermal Engineering,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
Search for other works by this author on:
Hongde Jiang
Hongde Jiang
Department of Thermal Engineering,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
Search for other works by this author on:
Xueying Li
Department of Thermal Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: li_xy@mail.tsinghua.edu.cn
Tsinghua University,
Beijing 100084, China
e-mail: li_xy@mail.tsinghua.edu.cn
Jing Ren
Department of Thermal Engineering,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
Hongde Jiang
Department of Thermal Engineering,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
1Corresponding author.
Contributed by the Heat Transfer Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received March 17, 2017; final manuscript received March 21, 2017; published online April 25, 2017. Editor: David Wisler.
J. Eng. Gas Turbines Power. Oct 2017, 139(10): 101901 (9 pages)
Published Online: April 25, 2017
Article history
Received:
March 17, 2017
Revised:
March 21, 2017
Citation
Li, X., Ren, J., and Jiang, H. (April 25, 2017). "Experimental Investigation of Endwall Heat Transfer With Film and Impingement Cooling." ASME. J. Eng. Gas Turbines Power. October 2017; 139(10): 101901. https://doi.org/10.1115/1.4036361
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