6533b86efe1ef96bd12cbdd0
RESEARCH PRODUCT
AN ANALYTICAL SOLUTION OF KINEMATIC WAVE EQUATIONS FOR OVERLAND FLOW UNDER GREEN-AMPT INFILTRATION
Carmelo AgneseGiorgio Baiamontesubject
Mathematical modelTurbulenceMechanical Engineeringlcsh:SBioengineeringLaminar flowMechanicslcsh:S1-972Industrial and Manufacturing EngineeringKinematic wavePhysics::Fluid Dynamicslcsh:AgricultureInfiltration (hydrology)hydrologic response infiltration analytical solution kinematic wave equationsImpervious surfaceGeotechnical engineeringlcsh:Agriculture (General)Surface runoffGeologydescription
This paper deals with the analytical solution of kinematic wave equations for overland flow occurring in an infiltrating hillslope. The infiltration process is described by the Green-Ampt model. The solution is derived only for the case of an intermediate flow regime between laminar and turbulent ones. A transitional regime can be considered a reliable flow condition when, to the laminar overland flow, is also associated the effect of the additional resistance due to raindrop impact. With reference to the simple case of an impervious hillslope, a comparison was carried out between the present solution and the non-linear storage model. Some applications of the present solution were performed to investigate the effect of main parameter variability on the hillslope response. Particularly, the effect of hillslope geometry and rainfall intensity on the time to equilibrium is shown.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-03-01 | Journal of Agricultural Engineering |