Axial Turbine Blade Tips: Function, Design, and Durability
Axial Turbine Blade Tips: Function, Design, and Durability
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DOI：
10.2514/1.11818
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发表时间：
2006-03
影响因子：
1.9
通讯作者：
R. Bunker
中科院分区：
文献类型：
--
作者：
R. Bunker
概述了当今涡轮发动机所涉及的科学和技术，特别关注包括轴向涡轮叶片尖端的关键旋转到静止界面。目的是对涡轮叶片尖端的功能、设计和耐用性问题提供简明的信息回顾。既没有提供历史记载，也没有提供参考书目。尽管讨论的大多数科学同样适用于低压涡轮机和蒸汽涡轮机的叶片尖端，但主要关注的是高压高温燃气轮机系统中最具挑战性的叶片尖端。因此，需要考虑各种飞机发动机和发电涡轮系统。根据成功设计中涉及的多学科权衡，讨论了基本功能要求、涡轮机系统设计方面以及影响叶片尖端和受叶片尖端影响的瞬态操作考虑因素。介绍了当今实践中叶尖的三种主要设计理念，并对空气动力学、传热和冷却的优点和缺点进行了详细检查。最后，指出了涡轮叶片尖端的使用寿命。
An overview of the science and technology involved in today's turbine engines is presented with specific focus on the critical rotational-to-stationary interfaces comprising axial turbine blade tips. The purpose is to provide a concise informative review of turbine blade tip functional, design, and durability issues. Neither a historical account nor a bibliography is presented. Attention is paid primarily to the most challenging blade tips in high-pressure, high-temperature gas turbine systems, although most of the science discussed applies equally well to blade tips in low-pressure turbines, as well as steam turbines. As such, a wide range of both aircraft engine and power generating turbine systems are considered. Basic functional requirements, turbine systems design aspects, and transient operational considerations affecting blade tips and affected by blade tips are discussed in light of the multidisciplinary tradeoffs involved in a successful design. The three dominant design philosophies for blade tips in practice today are presented with detailed examination of the aerodynamics, heat transfer, and cooling benefits and detractors. Finally, the in-service durability aspects of turbine blade tips are noted.