Author(s): Pierfranco Costabile; Carmelina Costanzo; Francesco Macchione
Linked Author(s): Francesco Macchione
Keywords: No Keywords
Abstract: In this paper a comparative analysis of 2D numerical models for overland flow simulations have been performed; in particular they are based on the shallow water approach according to fully dynamic, diffusive and kinematic wave modeling. The systems have been numerically solved by using the Mac Cormack second order central scheme. The models have been tested, validated and compared using numerical tests commonly used in the literature. Afterwards the implemented codes have been also applied to simulate overland flow over real topography. In this contest some numerical anomalies appear due to the presence of small water depth over high slope and irregular topography. A careful analysis of these aspects has been made and some numerical techniques have been implemented in order to prevent them.
Year: 2010