CALCULATION OF VERTICAL MOISTURE FLOW IN A SOIL BODY DURING EVAPORATION, INFILTRATION AND REDISTRIBUTION

Water movement in soil is governed by the law of continuity and the law of resistance. Combination of these two principles gives a differential equation which can describe the movement of moisture in soils. With the aid of theoretical considerations it is possible to divide the soil profile into different zones, for each of which the boundary conditions can be defined. For each such zone one can calculate the distribution of moisture content and water potential using the law of continuity and the law of resistance in accordance with the boundary conditions. The relationship between potential and moisture content is for this purpose considered to be step-wise. The most important advantage of this procedure is that the division of the soil profile into zones is automatically carried out in accordance with the changing moisture profile. /TRRL/

• Corporate Authors:

  Springer Verlag

  175 5th Avenue
  New York, NY  United States  10010
• Authors:
  • Kastanek, F
• Publication Date: 1973

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 49-58
• Serial:
  • Volume: 4

Subject/Index Terms

• TRT Terms: Boundary value problems; Calculation; Differential equations; Evaporation; Flow; Hydrology; Mathematical models; Moisture content; Motion; Pavement layers; Physical distribution; Soil water; Soils; Theory; Transfers; Water; Water table
• Uncontrolled Terms: Boundary conditions; Moisture movement; Profiles
• Old TRIS Terms: Distribution (Gen.)
• ITRD Terms: 6464: Calculation; 9016: Distribution (gen); 7183: Evaporation; 5430: Flow (fluid); 4332: Hydrology; 2952: Layer; 6473: Mathematical model; 5920: Moisture content; 4156: Soil; 9078: Theory; 6731: Transfer (phys); 4355: Water; 4394: Water table
• Subject Areas: Finance; Freight Transportation; Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00096018
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• Files: ITRD, TRIS
• Created Date: Sep 10 1975 12:00AM