SOLUTION OF EQUATION FOR VERTICAL UNSATURATED FLOW OF SOIL WATER

A NONLINEAR EQUATION DESCRIBING THE UNSTEADY AND UNSATURAT- ED, ONE-DIMENSIONAL VERTICAL FLOW IN POROUS MEDIA IS FORMULATED WITH THE FINITE ELEMENT REPRESENTATION EMPLOYING A GALERKIN APPROACH. FINITE ELEMENTS IN SPACE AND TIME AND LINEAR SHAPE FUNCTIONS WERE USED FOR TWO DIFFERENT ELEMENT CONFIGURATIONS, TRIANGLES AND RECTANGLES. A QUADRATIC FORM WAS USED FOR THE DIFFUSION COEFFICIENTS AND CAPILLARY CONDUCTIVITIES BASED ON CURVE-FITTING EXPERIMENTAL DATA OF THESE FUNCTIONS. THE RESULTS ARE COMPARED ON THE BASIS OF THE ELEMENT TYPE, AS WELL AS TO SOLUTIONS OBTAINED BY DIFFERENCE METHODS AND A SERIES SOLUTION TECHNIQUE.

  • Authors:
    • Bruch, J C
    • Zyvoloski, G
  • Publication Date: 1973-12

Media Info

  • Features: Figures; References;
  • Pagination: p. 417-22
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00238192
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 23 1974 12:00AM