气膜冷却技术对提高航空发动机性能、延长使用寿命具有重要意义。随着对气膜冷却效率要求的不断提高,研究人员和工程师对冷却孔的精度和数字测量进行了大量的工作。根据上述情况,本文概述了薄膜冷却技术的重要性和原理,并回顾了冷却孔的发展。此外,本文详细介绍了当前工程场景中使用的冷却孔的传统测量方法及其局限性,并将数字测量方法分为五种主要类型,包括探测测量技术,光学测量技术,红外成像技术,计算机断层扫描(CT)扫描技术,和复合测量技术。并分析了五种类型的方法和集成的自动化测量平台。最后,通过对冷却孔测量方法的归纳和分析,本文指出了技术挑战和未来趋势,为前瞻性研究提供参考和指导。
Film cooling technology is of great significance to enhance the performance of aero-engines and extend service life. With the increasing requirements for film cooling efficiency, researchers and engineers have carried out a lot of work on the precision and digital measurement of cooling holes. Based on the above, this paper outlines the importance and principles of film cooling technology and reviews the evolution of cooling holes. Also, this paper details the traditional measurement methods of the cooling hole used in current engineering scenarios with their limitations and categorizes digital measurement methods into five main types, including probing measurement technology, optical measurement technology, infrared imaging technology, computer tomography (CT) scanning technology, and composite measurement technology. The five types of methods and integrated automated measurement platforms are also analyzed. Finally, through a generalize and analysis of cooling hole measurement methods, this paper points out technical challenges and future trends, providing a reference and guidance for forward researches.