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Review of Film Cooling in Gas Turbines with an Emphasis on Additive Manufacturing-Based Design Evolutions

Author

Listed:
  • Sandip Dutta

    (Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA)

  • Inderjot Kaur

    (Department of Mechanical Engineering, Mississippi State University, Starkville, MS 39762, USA)

  • Prashant Singh

    (Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996, USA)

Abstract

Film-cooling technology is used in high-temperature components of gas turbines to extend their service lives. Hot-gas path components are susceptible to damage or failure in the absence of film cooling. Much of the optimization research efforts have been focused on film hole shapes, heat/mass transfer measurement techniques, and film cooling performance under various mainstream and coolant side operating conditions. Due to recent rapid advancements in the areas of measurement techniques (e.g., pressure-sensitive paints and fast high-resolution imaging) and metal additive manufacturing (AM), film cooling technology has undergone significant changes and shows potential new development. In this review, a historical perspective is discussed covering over five decades of innovation: the geometrical effects from injection angle and hole shapes; flow effects from density ratio, momentum-flux ratio, blowing ratio, advective capacity ratio, and freestream conditions; and more items related to AM. The impact of AM on film hole design strategies, the challenges posed by state-of-the-art AM technology, and pathways for future research are discussed. A comparative analysis of AM assisted film hole fabrication and conventionally manufactured film holes is elaborated.

Suggested Citation

  • Sandip Dutta & Inderjot Kaur & Prashant Singh, 2022. "Review of Film Cooling in Gas Turbines with an Emphasis on Additive Manufacturing-Based Design Evolutions," Energies, MDPI, vol. 15(19), pages 1-35, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:6968-:d:922798
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    References listed on IDEAS

    as
    1. Sandip Dutta & Reid Smith, 2020. "Nonlinear Optimization of Turbine Conjugate Heat Transfer with Iterative Machine Learning and Training Sample Replacement," Energies, MDPI, vol. 13(17), pages 1-23, September.
    2. Sandip Dutta & Prashant Singh, 2021. "Opportunities in Jet-Impingement Cooling for Gas-Turbine Engines," Energies, MDPI, vol. 14(20), pages 1-29, October.
    3. Panagiotis Stathopoulos, 2018. "Comprehensive Thermodynamic Analysis of the Humphrey Cycle for Gas Turbines with Pressure Gain Combustion," Energies, MDPI, vol. 11(12), pages 1-21, December.
    4. Xiangcan Kong & Yanfeng Zhang & Guoqing Li & Xingen Lu & Junqiang Zhu & Jinliang Xu, 2022. "Numerical Simulation of the Flow and Heat Transfer Characteristics of Sweeping and Direct Jets on a Flat Plate with Film Holes," Energies, MDPI, vol. 15(12), pages 1-15, June.
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    Cited by:

    1. Liang Xu & Zineng Sun & Qicheng Ruan & Lei Xi & Jianmin Gao & Yunlong Li, 2023. "Development Trend of Cooling Technology for Turbine Blades at Super-High Temperature of above 2000 K," Energies, MDPI, vol. 16(2), pages 1-19, January.
    2. Kenichiro Takeishi, 2022. "Evolution of Turbine Cooled Vanes and Blades Applied for Large Industrial Gas Turbines and Its Trend toward Carbon Neutrality," Energies, MDPI, vol. 15(23), pages 1-35, November.
    3. Joon Ahn, 2022. "Large Eddy Simulation of Film Cooling: A Review," Energies, MDPI, vol. 15(23), pages 1-21, November.

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