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Gas Turbine Blade Tip Heat Transfer and Cooling: A Literature Survey

机译：燃气轮机叶片尖端传热与冷却：文献综述

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摘要

Gas turbines are widely used for aircraft propulsion, land-base power generation, and other industrial applications like trains, marines, automobiles, etc. To satisfy the fast development of advanced gas turbines, the operating temperature must be increased to improve the thermal efficiency and output work of the gas turbine engine. However, the heat transferred to the turbine blade is substantially increased as the turbine inlet temperature is continuously increased. Thus, it is very important to cool the turbine blades for a long durability and safe operation. Cooling the blade must include cooling of the key regions being exposed to the hot gas. The blade tip region is such a critical area and is indeed difficult to cool. This results from the tip clearance gap where the complex tip leakage flow occurs and thereby local high heat loads prevail. This paper presents a literature survey of blade tip leakage flow and heat transfer, as well as research of external and internal cooling technologies. The present paper does not intend to review all published results in this field, nor review all papers from the past to now. This paper is limited to a review of recently available published works by several researchers, especially from 2001 to present, concerning blade tip leakage flow associated with heat transfer, and external or/and internal tip cooling technologies.
机译：燃气轮机广泛用于飞机推进，陆基发电以及其他工业应用，例如火车，海军陆战队，汽车等。为了满足先进燃气轮机的快速发展，必须提高工作温度以提高热效率和燃气涡轮发动机的输出功。但是，随着涡轮入口温度连续升高，传递到涡轮叶片的热量大大增加。因此，冷却涡轮叶片对于长的耐用性和安全操作是非常重要的。冷却叶片必须包括冷却暴露在热气中的关键区域。叶片尖端区域是这样的关键区域，并且确实难以冷却。这是由尖端间隙引起的，在尖端间隙中发生复杂的尖端泄漏流，从而局部存在较高的热负荷。本文介绍了有关叶尖泄漏流和传热的文献综述，以及外部和内部冷却技术的研究。本文不打算审查该领域中所有已发表的结果，也不打算审查过去到现在的所有论文。本文仅限于回顾一些研究人员最近发表的著作，尤其是从2001年至今，这些著作涉及与传热以及外部或/和内部尖端冷却技术相关的叶片尖端泄漏流。

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  • 来源
    《Heat Transfer Engineering》 |2010年第7期|P.527-554|共28页
  • 作者

    BENGT SUNDEN; GONGNAN XIE;

  • 作者单位

    Division of Heat Transfer, Department of Energy Sciences, Lund University, PO Box 118, S-22100,Lund, Sweden;

    Department of Energy Sciences, Lund University, Lund, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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