Tip Velocity of Viscous Fingers in Shear-Thinning Fluids in a Hele-Shaw Cell

• YAMAMOTO Takehiro

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

• KIMOTO Ryusuke

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

• MORI Noriyasu

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

抄録

Viscous fingering in non-Newtonian fluids in a rectangular Hele-Shaw cell was investigated. The cell was filled with a 0.5 or 1.0wt% aqueous solution of carboxymethylcellulose (CMC), a shear-thinning fluid. Air was injected into the cell and the growth of viscous fingers was observed. The velocity of finger tip was characterized by the pressure gradient. A modified Darcy law was able to describe the characteristics of the tip velocity that the growth rate of the tip velocity increased with increasing pressure gradient in the CMC solutions. The prediction of tip velocity with the modified Darcy law indicated that an effective pressure gradient near the tip was larger than the average pressure gradient between the finger tip and the cell exit and that the rate of increase depended on the cell gap width.

収録刊行物

• JSME International Journal Series B Fluids and Thermal Engineering

  JSME International Journal Series B Fluids and Thermal Engineering 48 (4), 756-762, 2005

  一般社団法人 日本機械学会

キーワード

• Non-Newtonian Fluid
• Free Surface Flow
• Multi-Phase Flow
• Viscous Fingering
• Hele-Shaw Cell
• Shear-Thinning Viscosity
• Tip Velocity
• Modified Darcy Law

詳細情報

• CRID: 1390001204676651520
• NII論文ID: 110004820244
• NII書誌ID: AA10888815
• DOI: 10.1299/jsmeb.48.756
• ISSN: 13475371
• ISSN: 13408054
• NDL書誌ID: 7697564
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7697564
• Web Site: http://www.jstage.jst.go.jp/article/jsmeb/48/4/48_4_756/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可