Numerical Analysis of Penetration Flow through Viscoelastic Fluids

• YAMAMOTO Takehiro

  Department of Mechanical Engineering, Graduate School of Engineering, Osaka University

• KIMOTO Ryusuke

  Department of Mechanical Engineering, Graduate School of Engineering, Osaka University

Abstract

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.

Journal

• Journal of Textile Engineering

  Journal of Textile Engineering 53 (1), 9-15, 2007

  The Textile Machinery Society of Japan

Keywords

• Penetration flow
• Viscoelastic fluid
• Interface
• Numerical simulation
• Phan-Thien Tanner model

Details

• CRID: 1390282680207179392
• NII Article ID: 10018294360
• NII Book ID: AA11482543
• DOI: 10.4188/jte.53.9
• ISSN: 18801986
• ISSN: 13468235
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed