Volume 35 Issue 9
Sep.  2020
Turn off MathJax
Article Contents
Article Navigation >  Journal of Aerospace Power  > 2020  >  35(9): 1884-1892
ZHANG Qingcai, TAN Xiaoming, LUO Qingyang. Numerical investigation on influence of sealing clearance on sealing performance[J]. Journal of Aerospace Power, 2020, 35(9): 1884-1892. doi: 10.13224/j.cnki.jasp.2020.09.010
Citation: ZHANG Qingcai, TAN Xiaoming, LUO Qingyang. Numerical investigation on influence of sealing clearance on sealing performance[J]. Journal of Aerospace Power, 2020, 35(9): 1884-1892. doi: 10.13224/j.cnki.jasp.2020.09.010
shu

Numerical investigation on influence of sealing clearance on sealing performance

doi: 10.13224/j.cnki.jasp.2020.09.010

  • College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • Received Date: 2020-03-16
  • Publish Date: 2020-09-28
    Abstract
  • A three-dimensional numerical simulation of the rim seal of a high-pressure turbine was carried out. To reveal the sealing efficiency and the flow field characteristics in the cavity,different parameters of axial and radial clearances were analyzed. Results showed that the sealing ring divided the disk cavity into an outer cavity and an inner cavity. The outer cavity could effectively resist the mainstream gas,therefore the inner cavity had a higher sealing efficiency. With the increase of axial clearance,the overlap length and the resistance of the coolant flow decreased,so the sealing efficiency of the disk cavity was improved. With a constant axial clearance,the radial distance of the outer cavity decreased as the radial distance decreased. The sealing efficiency at the lower radial region could be improved.

     

    • FullText(HTML)
  • loading
    • References(20)
  • [1]
    SCOBIE J A,SANGAN C M,OWEN J M,et al.Review of ingress in gas turbines［J］.Journal of Engineering for Gas Turbines and Power,2016,138(12):120801.1-120801.16.
    [2]
    KOFF B L,KOFF B L.Gas turbine technology evolution:a designers perspective［J］.Journal of Propulsion and Power,2004,20(4):577-595.
    [3]
    JOHNSON B V,MACK G J,PAOLILLO R E,et al.Turbine rim seal gas path flow ingestion mechanisms［R］.Indianapolis,Indiana,USA:the 30th Joint Propulsion Conference and Exhibit,1994.
    [4]
    OWEN J M.Prediction of ingestion through turbine rim seals:Part 1 rotationally-induced ingress［R］.ASME Paper GT2009-59121,2009.
    [5]
    OWEN J M,ZHOU K,POUNNEY O,et al.Prediction of ingress through turbine rim seals:Part I externally induced ingress［J］.Journal of Turbomachinery,2012,134(3):031013.1-031013.10.
    [6]
    SCHULER P,KURZ W,DULLENKOPF K,et al.The influence of different rim seal geometries on hot-gas ingestion and total pressure loss in a low-pressure turbine［R］.ASME Paper GT2010-22205,2010.
    [7]
    SCHULER P,DULLENKOPF K,BAUER H J.Investigation of the influence of different rim seal geometries in a low-pressure purbine［R］.ASME Paper GT2011-45682,2011.
    [8]
    POPOVIC I,HODSON H P.Improving turbine stage efficiency and sealing effectiveness through modifications of the rim seal geometry［J］.Journal of Turbomachinery,2013,135(6):061016.1-061016.10.
    [9]
    SAVOV S S,ATKINS N R,UCHIDA S.A comparison of single and double lip rim seal geometries［J］.Journal of Engineering for Gas Turbines and Power,2017,139(11):112601.1-112601.13.
    [10]
    陶加银,高庆,宋立明,等.基于附加示踪变量法的涡轮轮缘密封非定常封严特性研究［J］.工程热物理学报,2014,35(11):2154-2158. TAO Jiayin,GAO Qing,SONG Liming,et al.Numerical investigations on the unsteady mainstream ingestion characteristics of turbine rim seals with additional passive tracer method［J］.Journal of Engineering Thermophysics,2014,35(11):2154-2158.(in Chinese)
    [11]
    陶加银,高庆,宋立明,等.涡轮轮缘密封非定常主流入侵特性的数值研究［J］.西安交通大学学报,2014,48(1):53-59. TAO Jiayin,GAO Qing,SONG Liming,et al.Numerical investigations on unsteady mainstream ingestion characteristics of turbine rim seals［J］.Journal of Xi’an Jiaotong University,2014,48(1):53-59.(in Chinese)
    [12]
    JIA Xingyun,ZHANG Hai,JIANG Yuting.Performance of radial-axial clearance rim seal in realistic working conditions［J］.Aerospace Science and Technology,2018,77:373-387.
    [13]
    MOON M A,LEE C S,KIM K Y.Effect of a rib on rim seal performance［J］.Letters in Heat and Mass Transfer,2014,59(12):130-135.
    [14]
    王鸣,邬泽宇,罗翔,等.凸起数对各封严结构封严效率影响的实验［J］.航空动力学报,2018,33(5):1165-1172. WANG Ming,WU Zeyu,LUO Xiang,et al.Experiment on the effect of protrusion amount on sealing efficiency of different rim seals［J］.Journal of Aerospace Power,2018,33(5):1165-1172.(in Chinese)
    [15]
    邬泽宇,罗翔,胡彦文,等.凸起迎风面积对不同轮缘封严结构封严效率影响的实验研究［J］.推进技术,2019,40(5):1065-1072. WU Zeyu,LUO Xiang,HU Yanwen,et al.Experiment study on effects of section area of protrusion on sealing efficiency of different rim seal［J］.Journal of Propulsion Technology,2019,40(5):1065-1072.(in Chinese)
    [16]
    POPOVIC I,HODSON H P.The effects of a parametric variation of the rim seal geometry on the interaction between hub leakage and mainstream flows in high pressure turbines［J］.Journal of Engineering for Gas Turbines and Power,2013,135(11):112501.1-112501.11.
    [17]
    孔祥林,陶加银,冯增国,等.结构参数对轮缘密封封严特性影响的数值研究［J］.动力工程学报,2014,34(4):280-285,291. KONG Xianglin,TAO Jiayin,FENG Zengguo,et al.Effects of geometrical parameters on sealing performance of turbine rim seals［J］.Journal of Chinese Society of Power Engineering,2014,34(4):280-285,291.(in Chinese)
    [18]
    高庆,陶加银,宋立明,等.涡轮轮缘密封封严效率的数值研究［J］.西安交通大学学报,2013,47(5):12-17. GAO Qing,TAO Jiaying,SONG Liming,et al.Numerical investigation on the sealing efficiency of the turbine rim seal［J］.Journal of Xi'an Jiaotong University,2013,47(5):12-17.(in Chinese)
    [19]
    DA SOGHE R,BIANCHINI C,SANGAN C M,et al.Numerical characterization of hot-gas ingestion through turbine rim seals［J］.Journal of Engineering for Gas Turbines and Power,2017,139(3):032602.1-032602.9.
    [20]
    吴康,任静,蒋洪德,等.整级透平中转静轮缘封严问题研究:Part Ⅰ 封严与入侵［J］.工程热物理学报,2014,35(5):873-877.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF(3854.0KB)
    XML

    Article Metrics

    Article views (548) PDF downloads(487) Cited by()
    Proportional views
    Related

    Copyright © 《Journal of Aerospace Power》 All Rights Reserved.

    Supported by: Beijing Renhe Information Technology Co., Ltd.  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return