Flood caused by a dam-breaking flow may be catastrophic for the downstream area due to the sudden discharge of large volumes of water. Besides the complex flow of the propagating dam-break wave, the presence of structures such as bridges and buildings yield free surfaces which can be accurately reproduced by means of three-dimensional CFD software. The prediction of the dam-break flow main features in the presence of obstacles has a crucial role to decrease the damage. In this study, small scale laboratory experiments were conducted to examine the problem with a single obstacle. Five ultrasonic sensors were used as measurement devices. Measurements were compared with the numerical results obtained with the FLOW-3D software, solving RANS Equations with the k-eps turbulence closure model. A good agreement was observed generally in the water level – time graphs.

Experimental and numerical analysis of 3d dam-break waves in an enclosed domain with a single oriented obstacle

Stefania Evangelista;
2020

Abstract

Flood caused by a dam-breaking flow may be catastrophic for the downstream area due to the sudden discharge of large volumes of water. Besides the complex flow of the propagating dam-break wave, the presence of structures such as bridges and buildings yield free surfaces which can be accurately reproduced by means of three-dimensional CFD software. The prediction of the dam-break flow main features in the presence of obstacles has a crucial role to decrease the damage. In this study, small scale laboratory experiments were conducted to examine the problem with a single obstacle. Five ultrasonic sensors were used as measurement devices. Measurements were compared with the numerical results obtained with the FLOW-3D software, solving RANS Equations with the k-eps turbulence closure model. A good agreement was observed generally in the water level – time graphs.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11580/76753
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact