CALCULATION METHODS FOR TWO-DIMENSIONAL GROUNDWATER FLOW

This treatise, on calculation methods for two-dimensional groundwater flow, is subdivided into three parts. In the first part the basic theory is outlined. In the second part a review is given of the most important existing solution methods. In the third part a numerical calculation technique is developed that is based on the use of analytic functions for approximating two-dimensional flow patterns (analytical function method). A boundary condition formulation has been given that involves practical boundaries like 'equipotential line resistance', etc. In the calculation a flow region is divided into subregions that all have constant properties of fluid and soil. The sub-regions are coupled by connecting conditions for points of the separation lines between the sub-regions. Two classes of half-plane flow can also be calculated by this method, giving the advantage that for those problems no schematic boundary at some distance is necessary. A computer program was written, based on the analytical function method. This program can be used for the calculation of steady and non-steady flow patterns in regions of arbitrary shape that may include sinks and sources, several fluids and soil that may be in homogeneous and anisotropic. The input of the computer program consists only of general information (data with respect to permeability, anisotropy, density, etc.) and boundary information (position and properties of the boundary). Solutions that have been found by the analytical function method are exact within an approximate boundary. /TRRL/

  • Availability:
  • Corporate Authors:

    Rijkswaterstaat

    P.O. Box 20906
    The Hague,   Netherlands 
  • Authors:
    • Vanid, RHR
  • Publication Date: 1978

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 172 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00195633
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 90 12 02118 9
  • Report/Paper Numbers: Communication No. 28Monograph
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1979 12:00AM