@inproceedings{7a1d7c6640f24785970c541db51ea6f0,
title = "The effect of the shrouded rotor blade tip leakage flow on the aerodynamic performance of a one and half turbine stage",
abstract = "The tip leakage flow losses of the shrouded rotor blade contribute significantly to overall losses of the turbine stage. Effects of the shrouded rotor blade tip leakage flow in stator blade/shrouded rotor blade/stator blade on the aerodynamic performance of a 1.5 axial turbine stage were numerical investigated using commercial CFD software CFX-TASCflow. Three conditions with different numbers of sealing fins in the rotor blade shroud were simulated. The structure of the leakage flow and its influence to the next stator were presented. The results show that for shrouded rotor blade the leakage flow is from upstream to downstream of the blade when the leakage flow of the unshrouded blade follows a circumferential way. It is also found that the direction of the up-half span of the flow field is affected obviously when the leakage flow mixed with the main flow and lead to incidence losses to the next stator. The leakage flow which has high radial velocity tends to the mid-span in the following stator and change the flow field structure of the up-half passage. With more sealing fins, the loss of the isentropic efficiency of the stator is reduced. The influence of the leakage flow to the performance of the turbine stage is carefully studied. The work offers a solid theoretical basis and technical support to the design of the steam turbine.",
keywords = "Aerodynamic performance, Labyrinth seal, Numerical simulation, Shroud leakage flow, Turbine stage",
author = "Jun Li and Xin Yan and Qiang Lv and Yonghui Xie and Zhenping Feng",
year = "2007",
language = "英语",
series = "Challenges on Power Engineering and Environment - Proceedings of the International Conference on Power Engineering 2007, ICOPE 2007",
publisher = "Zhejiang Univ Press",
editor = "Fei Wang and Kefa Cen and Yong Chi",
booktitle = "Challenges on Power Engineering and Environment - Proceedings of the International Conference on Power Engineering 2007, ICOPE 2007",
note = "International Conference on Power Engineering 2007: Challenges on Power Engineering and Environment, ICOPE 2007 ; Conference date: 23-10-2007 Through 27-10-2007",
}