透平叶片在气热固耦合场下的热变形分析

王鹏; 廖平; 岳莉莉; 吴跃松

doi:10.13433/j.cnki.1003-8728.2015.0305

透平叶片在气热固耦合场下的热变形分析

doi: 10.13433/j.cnki.1003-8728.2015.0305

1.
中南大学高性能复杂制造国家重点实验室, 长沙 410083

基金项目:

国家自然科学基金项目（51275535）与国家973计划项目（2013CB035706）资助

详细信息

作者简介:
王鹏（1987-），硕士研究生，研究方向为流体机械和数值模拟，wangpeng_mech@163.com

通讯作者:
廖平，教授，liaoping0@163.com

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- 文章访问数: 180
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- 被引次数: 0
出版历程
- 收稿日期: 2013-08-02
- 刊出日期: 2015-03-05

Analysis of the Thermal Deformation of Turbine Blade Coupling Gas-heat-solid Field

1.
State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083

摘要

摘要: 叶片尺寸对涡轮机的工作效率影响很大，为了研究透平叶片在复杂工况下的热变形，建立了气-热-固耦合模型。通过改变冷却工质比，获得一系列的三维温度场和热变形分布。结果表明：叶片的热变形整体表现为从压力面向吸力面弯曲，纵向热膨胀显著，横向的变形较小，最大变形位于叶顶前缘。随着叶片表面温度降低，热变形对温度敏感度变差。在高温段可用纵向变形来近似代替叶片总变形。该模型可预测叶片热变形，为叶片尺寸设计和型面尺寸校正提供参考数据。
- 透平叶片 /
- 耦合模型 /
- 温度场 /
- 热变形
Abstract: Blade size can greatly influence the work efficiency of turbine. In order to analyze heat deformation of turbine blades under complex working conditions, a model coupling gas-heat-solid field was established to simulate the three dimensional flow fields. The temperature distribution and the corresponding deformation caused by thermal effect were acquired by changing the flow ratio between main stream and coolant. The results show that the deformation as a whole characterize as bending from the pressure side to suction side, and wich in vertical direction are much larger than that in horizontal direction. The largest deformation locates in the leading edge of blade tip. The thermal deformation is less sensitive with the decreasing of surface temperature. The thermal deformation can be approximately estimated by the vertical one. The present model can predict the thermal deformation of blade and provide the deformation for design and modify the blade dimensions.
- angle of attack /
- coupling model /
- deformation /
- design

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参考文献(11)

[1]	张耀明,柴山,马浩,等.非均匀气流场中的汽轮机短叶片间隙气流激振力分析[J]. 机械科学与技术,2001,20(3):343-345 Zhang Y M, Chai S, Ma H, et al. An analysis on the air exciting-vibration force of short vane of steam turbine in non-uniform airflow field[J]. Mechanical Science and Technology for Aerospace Engineering,2001,20(3):343-345 (in Chinese)
[2]	张丽霞,张伟,潘际銮.基于流固耦合理论的混流式叶片动力学分析[J]. 清华大学学报,2008,48(5):773-776 Zhang L X, Zhang W, Pan J L. Dynamic analysis of a Francis turbine based on the fluid-structure interaction theorem[J]. Journal of Tsinghua University,2008,48(5):773-776 (in Chinese)
[3]	Bohn D. Conjugate flow and heat transfer calculation of a high pressure turbine nozzle guide vane[J]. AIAA,2001
[4]	Na S, Williams B, Dennis R A, et al. Internal and film cooling of a flat plate with conjugate heat transfer[C]//2008 ASME International Mechanical Engineering Congress and Exposition,2007
[5]	Kim K M, Park J S, Lee D H. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis,2011,18(4):1212-1222
[6]	潘旭,李成,铁瑛,等.轴流泵叶片流固耦合强度分析[J].水力发电学报,2012,31(4):221-226,237 Pan X, Li C, Tie Y, et al. Strength ananysis of fluid-solid coupling of axial flow pump blades[J]. Journal of Hydroelectric Engineering,2012,31(4):221-226,237 (in Chinese)
[7]	Kim K M, Park J S, Lee D H. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis,2011,18(4):1212-1222
[8]	Menter F R, Langtry R B, Likki S R, et al. A correlation-based transition model using local variables - Part Ⅰ: model formulation[J]. Journal of Turbomachinery-Transactions of The ASME,2006,128(3):413-422
[9]	Langtry R B, Menter F R, Likki S R, et al. A correlation-based transition model using local variables - Part Ⅱ: test cases and industrial applications[J]. Journal of Turbomachinery-Transactions of The ASME,2006,128(3):423-434
[10]	张效伟,朱惠人.大型燃气涡轮叶片冷却技术[J].热能动力工程,2008,23(1):1-6 Zhang X W, Zhu H R. Blade cooling technology of heavy-duty gas turbines[J]. Journal of Engineering for Thermal Energy and Power,2008,23(1):1-6 (in Chinese)
[11]	李桂华.复杂规则曲面机械零件的热变形理论及应用研究[D].合肥:合肥工业大学,2006 Li G H. Theoretical and applied research of thermal deofrmation of complicated machine components with regular camber[D]. Hefei:Hefei University of Technology,2006 (in Chinese)