Creation and observation of tensile waves in oil column

Seiichi Washio, Satoshi Takahashi, Tadataka Konishi, Hitoshi Moriwake

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The idea of tensile stress in a liquid is not necessarily familiar in fluid engineering, and much less accepted is the belief that a tensile stress can be propagated through a liquid. The present paper offers evidence of those 'tensile waves' in a hydraulic oil. This experiment showed that a pipe with one end blocked, branching from the main line where column separation is started, creates transient waves exhibiting alternate tension and compression. Ordinary viscous wave theory proves to properly predict the measured pressure waves, which reveals that the propagation velocity of a tensile wave is no different from that of a compressive one. Visual observation with the use of a transparent acrylic tube as a branch has confirmed that an oil column ruptures under excessive tension at the blocked end and after rupture a minute bubble probably born through diffusive gas release from the oil remains.

Original languageEnglish
Pages (from-to)342-348
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number2
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes


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