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Optimal design of impinging jets in an impingement/effusion cooling system

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  • Kim, Kyung Min
  • Moon, Hokyu
  • Park, Jun Su
  • Cho, Hyung Hee

Abstract

To design an impingement/effusion cooling system that realizes the lowest thermal stress in an impingement/effusion cooling system, we conducted thermal analysis and optimization using a second-order response surface method. The optimal impinging jet system was based on four design variables: the spacing between the impinging jets and effusion holes (1.0 ≤ Sp ≤ 5.0), the channel height from impinging jet to effusion surface (1.0 ≤ Ht ≤ 3.0), the mass flux ratio of the crossflow to the impinging jet flow (0.1 ≤ G∗ ≤ 1.3, −1.3 ≤ G∗ ≤ −0.1), and the main flow temperature (1100 K ≤ Tm ≤ 1800 K). We considered several cases involving inlined and staggered jets, and two cooling flow direction: the same direction and reverse direction. Response surface functions were constructed to determine the impinging jet system with the lowest value among the maximum stresses calculated within the design ranges. In each case, the response surface function for determining the maximum stress was composed of combinations of the four design variables. These functions can be used to find the optimum design point that achieves the lowest stress around film cooling holes in hot components of a gas turbine.

Suggested Citation

  • Kim, Kyung Min & Moon, Hokyu & Park, Jun Su & Cho, Hyung Hee, 2014. "Optimal design of impinging jets in an impingement/effusion cooling system," Energy, Elsevier, vol. 66(C), pages 839-848.
    • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:839-848
    DOI: 10.1016/j.energy.2013.12.024
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    References listed on IDEAS

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    1. Kim, Kyung Min & Jeon, Yun Heung & Yun, Namgeon & Lee, Dong Hyun & Cho, Hyung Hee, 2011. "Thermo-mechanical life prediction for material lifetime improvement of an internal cooling system in a combustion liner," Energy, Elsevier, vol. 36(2), pages 942-949.
    2. Kim, Kyung Min & Kim, Beom Seok & Lee, Dong Hyun & Moon, Hokyu & Cho, Hyung Hee, 2010. "Optimal design of transverse ribs in tubes for thermal performance enhancement," Energy, Elsevier, vol. 35(6), pages 2400-2406.
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    1. Łapka, Piotr & Ciepliński, Adrian & Rusowicz, Artur, 2020. "Numerical model and analysis of heat transfer during microjets array impingement," Energy, Elsevier, vol. 203(C).
    2. Lioua Kolsi & Fatih Selimefendigil & Kaouther Ghachem & Talal Alqahtani & Salem Algarni, 2022. "Multiple Impinging Jet Cooling of a Wavy Surface by Using Double Porous Fins under Non-Uniform Magnetic Field," Mathematics, MDPI, vol. 10(4), pages 1-20, February.
    3. Tariq, Rasikh & Xamán, J. & Bassam, A. & Ricalde, Luis J. & Soberanis, M.A. Escalante, 2020. "Multidimensional assessment of a photovoltaic air collector integrated phase changing material considering Mexican climatic conditions," Energy, Elsevier, vol. 209(C).
    4. Sciubba, Enrico, 2015. "Air-cooled gas turbine cycles – Part 1: An analytical method for the preliminary assessment of blade cooling flow rates," Energy, Elsevier, vol. 83(C), pages 104-114.
    5. Chung, Heeyoon & Sohn, Ho-Seong & Park, Jun Su & Kim, Kyung Min & Cho, Hyung Hee, 2017. "Thermo-structural analysis of cracks on gas turbine vane segment having multiple airfoils," Energy, Elsevier, vol. 118(C), pages 1275-1285.
    6. Peng Guan & Yan-Ting Ai & Cheng-Wei Fei, 2019. "An Enhanced Flow-Thermo-Structural Modeling and Validation for the Integrated Analysis of a Film Cooling Nozzle Guide Vane," Energies, MDPI, vol. 12(14), pages 1-20, July.
    7. Rodrigo J. F. Neno & Beatriz S. Dias & Jorge E. P. Navalho & José C. F. Pereira, 2022. "Numerical Simulation of Heat Removal from a Window Slab Partition of a Radiative Coil Coating Oven," Energies, MDPI, vol. 15(6), pages 1-21, March.

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