Rayleigh-Taylor Instability in Porous Media

• IZUMI Norihiro

  北海道大学　大学院工学研究院

• MAEDA Ken-ichi

  名古屋工業大学　大学院工学研究科

Bibliographic Information

Other Title

• 浸透層内におけるRayleigh-Taylor不安定

Abstract

When rain pours over porous media, rain water tends to infiltrate their inside. In order to enable further infiltration, the air in the void of porous media has to be replaced with water. If the replacement between water and air is not smoothly implemented, water cannot seep into porous media as observed on river levees during heavy rainfall. This might be caused by the fact that the equilibrium of water with a relatively high density on top of air with a far lower density may be stable or weakly unstable in porous media. We have performed a linear stability analysis to study the Rayleigh-Taylor instability in porous media.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

  Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 69 (2), I_545-I_551, 2013

  Japan Society of Civil Engineers

Keywords

• river levee
• seepage water
• density
• Rayleigh-Taylor instability
• viscosity

Details

• CRID: 1390282680326514048
• NII Article ID: 130004557385
• DOI: 10.2208/jscejam.69.i_545
• ISSN: 21854661
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed