Solute Transport Modeling in Overland Flow Applied to Fertigation

Solute Transport Modeling in Overland Flow Applied to Fertigation

A model of solute transport in overland flow is developed and applied to the simulation of surface fertigation. Water flow is simulated using the depth-averaged, one-dimensional shallow water equations. Solute flow is represented by an advectiondiffusion model. The resulting set of three partial differential equations is sequentially solved at each time step. First, water flow is computed using...

Modeling Transport of Cryptosporidium Parvum Oocysts in Overland Flow

Cryptosporidium, a manure-borne protozoan parasite that is common in the environment, has recently been recognized as an important microbial contaminant of water. Cryptosporidium parvum (C. parvum) can cause infection and diarrhea in many mammalian hosts, including humans. Because cattle, particularly calves, are considered a major source of C. parvum , it is important to understand the movemen...

Conjunctive surface–subsurface modeling of overland flow

In this paper, details of a conjunctive surface–subsurface numerical model for the simulation of overland flow are presented. In this model, the complete onedimensional Saint-Venant equations for the surface flow are solved by a simple, explicit, essentially non-oscillating (ENO) scheme. The two-dimensional Richards equation in the mixed form for the subsurface flow is solved using an efficient...

The secret to successful solute-transport modeling.

Modeling subsurface solute transport is difficult-more so than modeling heads and flows. The classical governing equation does not always adequately represent what we see at the field scale. In such cases, commonly used numerical models are solving the wrong equation. Also, the transport equation is hyperbolic where advection is dominant, and parabolic where hydrodynamic dispersion is dominant....

Modeling Fate and Transport of Cryptosporidium Parvum and Rotavirus in Overland Flow by Rabin Bhattarai Dissertation