Fluid Mechanics and Flight Mechanics

Multi-dimensional and efficient optimization of cooling layout considering combination of oval hole inclination angles

  • Jiajie GUO ,
  • Zhi TAO ,
  • Liming SONG ,
  • Jun LI
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  • School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China

Received date: 2024-11-29

  Revised date: 2024-12-18

  Accepted date: 2025-03-10

  Online published: 2025-03-19

Supported by

National Science and Technology Major Project (2019-Ⅱ-0008-0028)

Abstract

To deeply explore the multivariate design space considering the combination of oval hole inclination angles, and further enhance the aero-thermal performance of the squealer tip, the steady-state RANS numerical simulation method was employed to optimize the cooling layout on a squealer tip. The variation of the flow field and the resulting performance improvement were analyzed. More importantly, to accelerate the rate of engineering optimization, a high fast-converging optimization algorithm suitable for high-dimensional engineering problems was developed based on the framework of a classical evolutionary algorithm and advanced optimization operators. Following classical function testing, a mixed optimization of single objective and bi-objective was conducted. The results demonstrated that in the optimal structure, the spacing between cooling holes is reduced, the wall attachment performance is improved with elevated positive axial inclination angles, and the coupling relationship between film coverage and cooling hole orientation is better balanced. The film cooling effectiveness is increased by 79.9%, and the enhancement of stage efficiency reaches 0.054% in comparison to the benchmark structure.

Cite this article

Jiajie GUO , Zhi TAO , Liming SONG , Jun LI . Multi-dimensional and efficient optimization of cooling layout considering combination of oval hole inclination angles[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(16) : 131584 -131584 . DOI: 10.7527/S1000-6893.2025.31584

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