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Analysis of Instability Force Mechanism of Ultra High Speed and Ultra High Pressure Non-contacting Seal under Two Phase Flow

Research Project

Project/Area Number 05452165
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Dynamics/Control
Research InstitutionKobe University

Principal Investigator

IWATSUBO Takuzo  Kobe University, Faculty of Engineering, Professor, 工学部, 教授 (00031097)

Co-Investigator(Kenkyū-buntansha) ADACHI Kazuhiko  Kobe University, Faculty of Engineering, Research Associate, 工学部, 助手 (30243322)
KAWAMURA Shozo  Kobe University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (00204777)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1994: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1993: ¥6,200,000 (Direct Cost: ¥6,200,000)
KeywordsTwo Phase Flow / Dynamic Fluid Force / Nonsynchronous Vibration / Non-contacting Seal / Turbo-machinery / Pump / Ultra High Speed / Ultra High Pressure
Research Abstract

Development of ultra high speed and ultra high pressure turbo-machinery is needed in liquid fuel pump of rocket engine, ultra conductive generator and so on. However nonsynchronous vibration is occured by the instabillity force of non-contacting seal because seal clearance is reduced in order to prevent the leakage loss. In this paper analysis instability force and instability analysis of high performance rotor are experimentally and theoretically perforemed in the case of two phase flow of turbo-pump. From this point of view the following studies are carried out ;
(1) Analysis of static and dynamic characteristics of double spiral seal and comparison of the characteristics with experimental results.
(2) Analysis of static and dynamic characteristics of two phase flow force through non-contacting seal and stability of rotor under the two phase flow.
As the result, the followings are obtained ;
(1) Idea of equivalent clearance can be avairable in the analysis of non-contacting seal.
(2) Static and dynamic characteristics of two phase flow seal can be theoretically obtained, then stability of pump rotor in the two phase flow can be analyzed.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Takuzo IWATSUBO: "An Experimental Study on the Static and Dynamic Characteristics of Pump Annular Seals with Two Phase Flow" NASA Conference Publication 3239. 49-64 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 岩壺 卓三: "ポンプシール中の二相流による動的流体力の実験的研究" D&D'93 機構論[No.930-42]. Vol.A. 282-286 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Takuzo IWATSUBO: "The Dynamic Forces of Pump Annular Seals Induced by Two Phase Flow" ISROMAC-5. Vol.B. 247-263 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Takuzo IWATSUBO: "The Dynamic Forces of Pump Annular Seals Through Two Phase Flow" IFToMM Fourth Int. Conf. Rotor Dynamics. 191-196 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Takuzo IWATSUBO,Tadashi NISHINO: ""An Experimental Study on the Static and Dynamic Characteristics of Pump Annular Seals with Two Phase Flow"" NASA. CP-3239. 49-64 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Takuzo IWATSUBO,Tadashi NISHINO: ""An Experimental Study on the Dynamic Characteristics of Pump Annular Seals by Two Phase Flow"" D&D'93. No.930-42, Vol.A. 282-286 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Takuzo IWATSUBO,Tadashi NISHINO: ""The Dynamic Forces of Pump Annular Seals Induced by Two Phase Flow"" ISROMAC-5. Vol.B. 247-263 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Takuzo IWATSUBO,Tadashi NISHINO: ""The Dynamic Forces of Pump Annular Seals Through Two Phase Flow"" IFToMM Fourth Int.Conf.Rotor Dynamics. 191-196 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Takuzo IWATSUBO: "An Experimental Study on the Static and Dynamic Characteristics of Pump Annular Seals with Two Phase Flow" NASA Conference Publication 3239. 49-64 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 岩壺卓三: "ポンプシール中の二相流による動的流体力の実験的研究" D&D′93機構論[No.930-42]. Vol.A. 282-286 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] Takuzo IWATSUBO: "The Dynamic Forces of Pump Annular Seals Induced by Two Phase flow" ISROMAC-5. Vol.B. 247-263 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Takuzo IWATSUBO: "The Dynamic Forces of Pump Annular Seals Through Two Phase flow" IFToMM Fourth Int.Conf.Dynamics. 191-196 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Takuzo IWATSUBO: "The Dynamic Forces of Pump Annular Seals through Two Phase Flow" IFToMM Fourth International Conference on Rotor Dynamics. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] Takuzo IWATSUBO: "The Dynamic Forces Pump Annular Seal Induced by Two Phase Flow" ISROMAC-5,Fifth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery. (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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