ABSTRACT

The assembly step between the vane and blade in a gas turbine exists because of the rotating blade and expansion of the external flow passage. The assembly step has a great impact on the heat transfer distribution on the endwall. In this study, a rod was installed in front of the blade to generate non-uniform inlet flow and to observe the heat transfer characteristics on the endwall. The mass transfer coefficients on the endwall were measured using the naphthalene sublimation method. The results revealed that, as the diameter of the rod increased, a turbulent boundary layer developed.

中文翻译：

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不同入口流动条件下涡轮叶片端壁传热特性

摘要

燃气轮机叶片与叶片之间的组装步骤是由于叶片旋转和外部流道的膨胀而存在的。装配步骤对端壁上的传热分布有很大影响。在这项研究中，在叶片前安装了一根杆，以产生不均匀的入口流并观察端壁上的传热特性。端壁传质系数采用萘升华法测定。结果表明，随着棒直径的增加，形成了湍流边界层。