Analytical Study of Unsteady Nested Groundwater Flow Systems
作者: Hong NiuXing LiangSheng-nan NiZhang WenRenata Archetti
作者单位: 1School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
2Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, School of Environment Studies, China University of Geosciences, Wuhan 430074, China
3Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
刊名: Mathematical Problems in Engineering, 2015, Vol.2015
来源数据库: Hindawi Journal
DOI: 10.1155/2015/284181
原始语种摘要: Two analytical solutions using segregation variable method to calculate the hydraulic head under steady and unsteady flow conditions based on Tóth’s classical model were developed. The impacts of anisotropy ratio, hydraulic conductivity ( K ), and specific yield ( μ s ) on the flow patterns were analyzed. It was found that the area of the equal velocity region increases and the penetrating depth of the flow system decreases at steady state with anisotropy ratio increases, which is defined as ε = K x / K z . In addition, stagnant zones can be found in the flow field where the streamlines have opposite directions. These stagnant zones move toward the surface as the horizontal hydraulic conductivity increases. The results of the study on transient flow indicate that a relative increase in...
全文获取路径: Hindawi  (合作)

  • hydraulic 水力的
  • unsteady 不安定的
  • ratio 
  • conductivity 传导率
  • impact 冲击碰撞
  • conditions 条件式
  • increase 增加
  • stagnant 不景气的
  • horizontal 水平线
  • relative 相对的