Flow Through Soils

Flow Through Soils

1. Definitions/nomenclature

   • Porosity = % of void in rock/regolith n = Vv/Vt
   • Permeability = ability of rock/regolith to transmit fluid
   • e = void ratio = Vv/Vs
   • i = dh/ds = hydraulic gradient
   • k = coefficient of permeability

2. Darcy's law

   • Pressure gradient causes flow to occur from high pressure to low pressure
   • v = ki
     • vx = Kx(dh/dx) etc

3. Laplace equation

   • -Homogeneous soil - Anisotrpic permeability - Laminar flow throughout - Saturated Soil
   • Taylor Series
   • Numerical Solution
   • Flow Equation