Numerical Analysis of Penetration Flow through Viscoelastic Fluids

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著者

    • YAMAMOTO Takehiro
    • Department of Mechanical Engineering, Graduate School of Engineering, Osaka University
    • KIMOTO Ryusuke
    • Department of Mechanical Engineering, Graduate School of Engineering, Osaka University

抄録

Penetration flows of a Newtonian fluid through a viscoelastic fluid in an abrupt contraction channel were numerically analyzed. In the numerical simulation, the Phan-Thien Tanner model was employed as a constitutive equation. The level set method was used to numerically represent the interface between two fluids and effects of interfacial tension were introduced into the numerical simulation using the continuum surface force model. The numerical computation predicted the occurrence of fluctuation of interface between a Newtonian penetrating fluid and a viscoelastic fluid in a downstream conduit of the contraction channel. This fluctuation was a typical phenomenon for penetration flows through a viscoelastic fluid and was not observed in a penetrate flow through a Newtonian fluid. Furthermore, it was confirmed that the normal stress effect drove the fluctuation and the amplitude of fluctuation when elastic properties were strong.

収録刊行物

  • Journal of textile engineering  

    Journal of textile engineering 53(1), 9-15, 2007-02-15 

    一般社団法人 日本繊維機械学会

参考文献:  28件

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各種コード

  • NII論文ID(NAID)
    10018294360
  • NII書誌ID(NCID)
    AA11482543
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13468235
  • データ提供元
    CJP書誌  J-STAGE 
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