In this paper lock-release density currents moving on flat and upsloping beds are investigated by laboratory experiments and numerical simulations. Numerical simulations were carried out by a two-layer shallow-water model, testing two different entrainment relations: a modified form of Turner’s formula, suggested by Adduce et al. (2012), and Cenedese and Adduce (2010) relation. Numerical simulations performed following Adduce et al. (2012) show a better agreement with the experimental results, if compared with the simulations obtained using Cenedese and Adduce (2010) relation. Moreover numerical results show an area where the current’s velocity is negative, i.e. the dense fluid is moving downslope.
Adduce, C., Lombardi, V., Sciortino, G., LA ROCCA, M., Morganti, M. (2013). Entrainment effect on the simulation of density currents by a two layer shallow water model. In Proceedings of the International Offshore and Polar Engineering Conference.
Entrainment effect on the simulation of density currents by a two layer shallow water model
ADDUCE, Claudia;LOMBARDI, VALENTINA;SCIORTINO, Giampiero;LA ROCCA, MICHELE;MORGANTI, Mario
2013-01-01
Abstract
In this paper lock-release density currents moving on flat and upsloping beds are investigated by laboratory experiments and numerical simulations. Numerical simulations were carried out by a two-layer shallow-water model, testing two different entrainment relations: a modified form of Turner’s formula, suggested by Adduce et al. (2012), and Cenedese and Adduce (2010) relation. Numerical simulations performed following Adduce et al. (2012) show a better agreement with the experimental results, if compared with the simulations obtained using Cenedese and Adduce (2010) relation. Moreover numerical results show an area where the current’s velocity is negative, i.e. the dense fluid is moving downslope.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
