Transient infiltration process of seepage flow from two dimensional cracks

Hsien Ter Chou, Bo Heng Lee, Chu Hui Chen

Research output: Contribution to journalArticlepeer-review

Abstract

This study explores the 2-D transient seepage flow from cracks into different porous media, including both coarse material and fine material. The Crack Apparatus of Hele-Shaw Model is chosen to analyze the configuration of wetting front in the coarse material. Due to the effect of gravity on the flow condition, the wetting front in the coarse material is more elongated than that of the fine material. The limited width of wetting front is approaching a constant value in the coarse material. On the other hand, the effect of capillary causes the wetting front in the fine sand expands continuously as time increases. In this paper, a Green-Ampt type of conceptual model is proposed to describe the propagating process of the wetting front in different materials. The time-dependent wetting front and the corresponding wetted area are obtained in this study, which are beneficial for examining the leaky contaminant transport from cracks into different porous media or for the analysis of the slope stability problems.

Original languageEnglish
Pages (from-to)483-493
Number of pages11
JournalJournal of the Chinese Institute of Civil and Hydraulic Engineering
Volume20
Issue number4
StatePublished - Dec 2008

Keywords

  • 2-D transient seepage flow
  • Crack
  • Green-ampt model
  • Hele-shaw model
  • Wetting front

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