Numerical analysis of cavitating flow of magnetic fluid in a vertical venturi channel

Jun Ishimoto, Shinichi Kamiyama

Research output: Contribution to journalArticle

Abstract

The fundamental multiphase flow characteristics of the two-dimensional cavitating flow of magnetic fluid in a vertical venturi channel under a strong nonuniform magnetic field are numerically predicted to realize the further development and high performance of the new type of a two-phase fluid driving system using magnetic fluids. First, the governing equations of the cavitating flow of a hexane-based magnetic fluids based on the unsteady thermal nonequilibrium two-fluid model are presented and several two-phase flow characteristics are numerically calculated taking into account the effect of the strong nonuniform magnetic field. Based on the numerical results, the two-dimensional structure of the cavitating flow and cloud cavity formation of the magnetic fluid through a vertical venturi channel are shown in detail. The numerical results demonstrate that effective two-phase magnetic driving force and fluid acceleration at the venturi channel are obtained by the practical use of the magnetization of the working fluid. Also clarified is the precise control of the cavitating flow of magnetic fluid that is possible by effective use of the magnetic body force which acts on cavitation bubbles.

Original languageEnglish
Pages (from-to)478-487
Number of pages10
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume48
Issue number3
DOIs
Publication statusPublished - 2006 Feb 15

Keywords

  • Bubble
  • Cavitation
  • Internal flow
  • MHD
  • Magnetic fluid
  • Multiphase flow

ASJC Scopus subject areas

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

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