Deterministic finite element solution of unsteady flow and transport through porous media: Model development
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A deterministic finite element solution to predict water flow and nutrient movement through porous media was developed and implemented using Visual C++. The model is user-friendly, can be used as a management tool, and is able to predict the NO3-N losses in subsurface drainage water. The application of either solid or liquid fertilizer can be easily simulated. To reduce computational time, mathematical expressions for the contributions of the flux boundary conditions to the finite element equations were developed analytically and directly introduced into the force vectors. The global system of equations was evaluated using a finite difference approximation in the time domain. The finite element methodology provides a very attractive approach to predict flow and transport of nutrients in soils.
author list (cited authors)
Aguirre, C. G., Madani, A., Mohtar, R., & Haghighi, K.