|Shao, Mingan - IOWA STATE UNIVERSITY|
|Horton, Robert - IOWA STATE UNIVERSITY|
Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: November 3, 1995
Publication Date: N/A
Technical Abstract: Coupled conduction and convection heat transfer occurs in soil when a significant amount of water is moving. In this paper, an analytical solution for the heat conduction-convection equation is presented. The solution is basically obtained by Fourier transformation. Results from the solution are compared to observations from a field infiltration experiment with natural temperature variations. The predicted temperature values are very similar to the observed ones. Temperature changes with time for different soil depths are predicted from conduction-convection theory and from conduction theory alone. During infiltration, convection heat transfer provided a large contribution for the temperature changes at all soil depths monitored. The theory also predicts accurate temperature effects on infiltration.