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A heat engine is a device used to extract heat from a source and then convert it into mechanical work used for various applications. For example, a steam engine on an old-style train can produce the work needed for driving the train.
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Aircraft engine nozzle guide vane surface temperature optimization.

Lou Decang1,2, Wang Mengjun2, Liang Jinhua2

  • 1NorthWestern Polytechnical University, Xian City, Shanxi Province, 710129, China.

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|October 9, 2023
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Summary
This summary is machine-generated.

This study optimizes E3 engine nozzle guide vane cooling efficiency using sensitivity analysis and novel duck-paw film cooling holes. The optimized design significantly reduces maximum and average vane temperatures, enhancing thermal performance.

Keywords:
Conjugate heat transferDuck-paw type film cooling holeSensitivity analysis

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Area of Science:

  • Aerospace Engineering
  • Thermal Management
  • Computational Fluid Dynamics

Background:

  • Nozzle guide vanes in E3 engines require efficient cooling to prevent thermal damage.
  • Existing cooling methods face challenges in managing high temperatures, particularly on the pressure side.

Purpose of the Study:

  • To enhance the cooling efficiency of E3 engine nozzle guide vanes.
  • To reduce the maximum and local surface temperatures of the vane through geometric optimization.

Main Methods:

  • Sensitivity analysis using Design of Experiments (DOE) to rank geometric parameters affecting vane temperature.
  • Optimization of film cooling hole diameter and location.
  • Application of a novel duck-paw shaped film cooling hole designed using the adjoint method.
  • Three-dimensional conjugate heat transfer analysis.

Main Results:

  • Identified key geometric parameters influencing vane maximum temperature.
  • Duck-paw shaped film cooling holes demonstrated superior cooling efficiency compared to cylindrical holes.
  • Optimized design reduced maximum vane temperature by 39K and average temperature by nearly 20K.

Conclusions:

  • The proposed optimization method effectively improves nozzle guide vane cooling.
  • The duck-paw film cooling hole design is a significant advancement for thermal management in gas turbines.
  • The optimized cooling structure ensures enhanced durability and performance of the E3 engine.