Optimal design of novel laminated cooling system considering cooling effectiveness and thermomechanical performance

Honglin Li, Lei Li, Wenjing Gao, Zhonghao Tang, Chunlong Tan, Shuoshuo Ren

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Laminated cooling is deemed as one of the most potential and novel cooling technologies for turbine blade to increase turbine inlet temperature, which combines the superiority of film cooling, pin fin cooling and impingement cooling. To realize optimal design, the multidisciplinary design optimization of laminated cooling configuration is conducted considering cooling performance under acceptable pressure loss and thermomechanical performance. A coupled multidisciplinary analysis model is established to perform aerodynamical analysis, heat transfer analysis and thermomechanical analysis. Based on parametrized laminated model and Design of Experiments method, the cooling effectiveness, pressure loss coefficient and maximum stress can be obtained under different design parameters and their dominated design variables can be clarified. Using these sampling points, a Kriging approximation surrogate model can be established to replace real numerical calculation process and balance the efficiency and fidelity. Finally, the multi-island genetic algorithm is used to find the maximum cooling effectiveness and minimum pressure loss under the constraint of maximum stress. Results shows that, the dilation of film hole diameter, pin fin diameter and impingement hole diameter and the reduction of target plate thickness can effectively improve cooling performance and meanwhile decrease maximum stress, which can be up to 17.68% and 4.96% separately under the acceptable poressure loss coefficient raise of 16.8%. That can be attributed to the enhancement of inner heat transfer and improvement of outer film cooling.

Original languageEnglish
Title of host publicationProceedings of the ASME 2021 Heat Transfer Summer Conference, HT 2021
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791884874
DOIs
StatePublished - 2021
EventASME 2021 Heat Transfer Summer Conference, HT 2021 - Virtual, Online
Duration: 16 Jun 202118 Jun 2021

Publication series

NameProceedings of the ASME 2021 Heat Transfer Summer Conference, HT 2021

Conference

ConferenceASME 2021 Heat Transfer Summer Conference, HT 2021
CityVirtual, Online
Period16/06/2118/06/21

Keywords

  • Heat transfer
  • Laminated cooling
  • Multidisciplinary design optimization
  • Surrogate model
  • Thermomechanical

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