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2012 Fiscal Year Final Research Report

Self-induced vibration of pipe with inner flow

Research Project

  • PDF
Project/Area Number 22560802
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Naval and maritime engineering
Research InstitutionNational Maritime Research Institute

Principal Investigator

KOKUBUN Kentaroh  独立行政法人海上技術安全研究所, 洋上再生エネルギー開発系, 主任研究員 (50358404)

Co-Investigator(Kenkyū-buntansha) NIMURA Tadashi  独立行政法人海上技術安全研究所, 洋上再生エネルギー開発系, 主任研究員 (00425753)
Project Period (FY) 2010 – 2012
Keywords海中 / 海底工学
Research Abstract

The authors obtained the equations of motion of an elastic pipe which is hung from a mother ship and contains inner flow of sea water sucked up at bottom end of the pipe. Separation of variables derived real solutions i.e., eigenmodes from the equations of motion with neglecting Coriolis force. Numerical simulation, however, showed neither self-induced vibration nor resonance. The authors made an experimental device which consists of a pipe, a flow velocimeter and a pump, and sucks up water from basin and backs the drainage to the basin. The model test with variation of inner flow velocity and forced oscillation frequency, however, showed neither self-induced vibration nor resonance, too.

  • Research Products

    (1 results)

All 2013

All Presentation (1 results)

  • [Presentation] パイプの振動に対する内部流の影響2013

    • Author(s)
      國分健太郎
    • Organizer
      海上技術安全研究所研究発表会
    • Place of Presentation
      東京
    • Year and Date
      2013-06-25

URL: 

Published: 2014-08-29  

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