Water ow on vegetated hill. 1D shallow water equation type model

Abstract

A mathematical model for the water ow on a hill covered by variable distributed vegetation is proposed in this article. The model takes into account the variation of the geometrical properties of the terrain surface, but it assumes that the surface exhibits large curvature radius. After describing some theoretical properties for this model, we introduce a simplified model and a well-balanced numerical approximation scheme for it. Some mathematical properties with physical relevance are discussed and finally, some numerical results are presented.

Keywords

• hyperbolic system
• finite volume method
• well-balanced scheme
• energy dissipation