Abstract

The paper deals with the analysis of cycle features in the cooled turbine nozzle with asymmetric end surfaces. Influence of asymmetric end surfaces, which have been obtained in the course of turbine stage optimization, on the structure and dynamics of secondary flows in the blade passage is shown. Features of film cooling arrangement on the nozzle asymmetric end surface are analyzed. The method to ensure thermal state of end surfaces by arranging the convective heat transfer from the inside of the end surface is shown.

中文翻译：

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具有不对称端面的冷却涡轮喷嘴的循环改进

摘要

本文分析了具有非对称端面的冷却涡轮喷嘴中的循环特征。显示了在涡轮机级优化过程中获得的不对称端面对叶片通道中二次流的结构和动力学的影响。分析了喷嘴非对称端面上薄膜冷却装置的特点。示出了通过布置从端面内部的对流热传递来确保端面的热状态的方法。