A numerical model suitable for the simulation of dam break flow, for Newtonian or non-Newtonian fluids, has been developed. The main features of the model are concerned with the propagation of wet-dry fronts, the treatment of irregular and variable cross sections shape, and the applicability to highly sloping channels. Governing equations are numerically solved using a simple first-order finite volume scheme. Different test cases have been selected in order to check all the fundamental features necessary for debris and mud-flow simulation. The model has finally been tested using laboratory experiments on mud-flow dam-break over a sloping plane. Numerical results compare favourably with experiments in terms of front wave speed, peak height and residual front thickness.
1-D finite volume model for dam-break induced mud-flow
SCHIPPA, Leonardo;PAVAN, Sara
2009
Abstract
A numerical model suitable for the simulation of dam break flow, for Newtonian or non-Newtonian fluids, has been developed. The main features of the model are concerned with the propagation of wet-dry fronts, the treatment of irregular and variable cross sections shape, and the applicability to highly sloping channels. Governing equations are numerically solved using a simple first-order finite volume scheme. Different test cases have been selected in order to check all the fundamental features necessary for debris and mud-flow simulation. The model has finally been tested using laboratory experiments on mud-flow dam-break over a sloping plane. Numerical results compare favourably with experiments in terms of front wave speed, peak height and residual front thickness.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
