Movement of Water and Salt through a Clay-Water System: Experimental Verification of Onsager Reciprocal Relation1
- J. Letey and
- W. D. Kemper2
Equations that describe the movement of solution and salt through a soil system in which there are both hydrostatic and osmotic pressure gradients are presented. These equations are: JV = − LP ∇P + LPD ∇π, JD = LDP ∇P − LD ∇π, and JS/CS = (−LP + LDP) ∇P + (−LD + LPD) ∇π where JV is the flux of solution, JD the difference in velocity between water and salt, JS is flux of salt, P is pressure, π is osmotic pressure, CS is the average solute concentration, and L is phenomenological coefficients. The Onsager reciprocal relation states that LPD = LDP. This relation was found to be valid for a clay-water-salt system.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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