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一种复合方法抑制叶尖泄漏的试验及模拟研究

胡建军 张铎 张香兰 孔祥东

胡建军, 张铎, 张香兰, 等 . 一种复合方法抑制叶尖泄漏的试验及模拟研究[J]. 北京航空航天大学学报, 2018, 44(11): 2283-2291. doi: 10.13700/j.bh.1001-5965.2018.0038
引用本文: 胡建军, 张铎, 张香兰, 等 . 一种复合方法抑制叶尖泄漏的试验及模拟研究[J]. 北京航空航天大学学报, 2018, 44(11): 2283-2291. doi: 10.13700/j.bh.1001-5965.2018.0038
HU Jianjun, ZHANG Duo, ZHANG Xianglan, et al. Experiment and simulation study on tip leakage suppression by a compound method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(11): 2283-2291. doi: 10.13700/j.bh.1001-5965.2018.0038(in Chinese)
Citation: HU Jianjun, ZHANG Duo, ZHANG Xianglan, et al. Experiment and simulation study on tip leakage suppression by a compound method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(11): 2283-2291. doi: 10.13700/j.bh.1001-5965.2018.0038(in Chinese)

一种复合方法抑制叶尖泄漏的试验及模拟研究

doi: 10.13700/j.bh.1001-5965.2018.0038
基金项目: 

国家自然科学基金 51705446

国家自然科学基金 51641508

国家“973”计划 2014CB046405

河北省自然科学基金 E2015203271

详细信息
    作者简介:

    胡建军  男, 博士, 副教授。主要研究方向:叶轮机械气动热力学

    张铎  男, 硕士研究生。主要研究方向:叶轮机械气动热力学

    张香兰  女, 硕士研究生。主要研究方向:叶轮机械气动热力学

    孔祥东  男, 博士, 教授, 博士生导师。主要研究方向:流体传动及控制

    通讯作者:

    胡建军, E-mail:kewei729@163.com

  • 中图分类号: TK474.7

Experiment and simulation study on tip leakage suppression by a compound method

Funds: 

National Natural Science Foundation of China 51705446

National Natural Science Foundation of China 51641508

National Basic Research Program of China 2014CB046405

Natural Science Foundation of Hebei Province, China E2015203271

More Information
  • 摘要:

    为了强化涡轮叶顶间隙泄漏抑制,提出了将被动式气动封严与叶尖几何改型方法相结合用于抑制叶尖泄漏及其损失的流动调控新方案。对叶顶凹槽与自发射流耦合的3种典型方案进行了模型试验和数值模拟,探讨了2种被动式抑制方法的耦合机理。研究表明,叶顶凹槽与自发射流(STI)之间存在明显耦合作用,当自发射流出口位于凹槽底部时,自发射流与凹槽涡(GV)预先掺混,导致2种抑制效应相互抵消,无法对泄漏流形成有效抑制,为不良耦合。而当自发射流出口位于凹槽压力边或吸力边时,自发射流的反吹阻滞效应与凹槽涡的动能耗散效应相叠加,对泄漏流形成2次有效封堵,为有效的耦合方案,而且以自发射流出口位于凹槽吸力边时,对泄漏流的抑制效果最佳。

     

  • 图 1  叶顶凹槽耦合自发射流的数值模型和试验模型

    Figure 1.  Numerical and experimental model of tip groove coupled with STI

    图 2  试验系统

    Figure 2.  Experimental system

    图 3  3种叶尖模型及其流场测量结果

    Figure 3.  Three models of turbine tip and their flowfield measurement results

    图 4  数值模型的网格划分

    Figure 4.  Grid partition of numerical model

    图 5  网格独立性检查

    Figure 5.  Grid independence check

    图 6  试验结果与数值结果比较

    Figure 6.  Comparison between experimental and numerical results

    图 7  叶顶凹槽与自发射流耦合的3种典型方案

    Figure 7.  Three typical schemes of tip groove coupled with STI

    图 8  叶顶间隙泄漏质量流量随压比变化

    Figure 8.  Tip clearance leakage rate changing with pressure ratio

    图 9  自发射流与叶顶凹槽模型的叶顶间隙流场分布

    Figure 9.  Tip clearance flowfield distribution of STI and tip groove model

    图 10  3种耦合方案的间隙流场分布

    Figure 10.  Flowfield of clearance for three coupled schemes

    图 11  叶顶间隙出口流速分布

    Figure 11.  Velocity distribution of tip clearance outlet

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出版历程
  • 收稿日期:  2018-01-12
  • 录用日期:  2018-03-16
  • 网络出版日期:  2018-11-20

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