A new Two-Dimensional Unsteady Flow Model (2D-UFM) is formulated for the analysis of the debris-flow phenomena and the evaluation of different strategies of debris-flow control in valley areas downstream of topological hollows. The model is formulated on the assumption that there is no bed and bank erosion; and both solid concentration and density of the sediment-water mixture are homogeneous and constant in space and time. The governing equations are written using an integral conservative form, which allows the use of the finite volume method to analyze debris flows by two different approximate Riemann’ solvers under super-, sub- and trans-critical flow conditions. The model was first tested using both theoretical results and field data. Subsequently, we applied it to a case study, thereby proving its ability to analyze debris-flow hazards and to evaluate the performances of different countermeasures thereof.

Formulation of a two-dimensional unsteady debris-flow model for the analysis of debris-flow hazards and countermeasures thereof / Pianese, Domenico; L., Barbiero. - STAMPA. - 1:(2003), pp. 705-716. (Intervento presentato al convegno 3rd International Conference on “Debris-Flow Hazards and Mitigation: Mechanics, Predictions and Assessment tenutosi a Davos (Switzerland) nel 10-12 settembre 2003).

Formulation of a two-dimensional unsteady debris-flow model for the analysis of debris-flow hazards and countermeasures thereof

PIANESE, DOMENICO;
2003

Abstract

A new Two-Dimensional Unsteady Flow Model (2D-UFM) is formulated for the analysis of the debris-flow phenomena and the evaluation of different strategies of debris-flow control in valley areas downstream of topological hollows. The model is formulated on the assumption that there is no bed and bank erosion; and both solid concentration and density of the sediment-water mixture are homogeneous and constant in space and time. The governing equations are written using an integral conservative form, which allows the use of the finite volume method to analyze debris flows by two different approximate Riemann’ solvers under super-, sub- and trans-critical flow conditions. The model was first tested using both theoretical results and field data. Subsequently, we applied it to a case study, thereby proving its ability to analyze debris-flow hazards and to evaluate the performances of different countermeasures thereof.
2003
90-77017-78-X
Formulation of a two-dimensional unsteady debris-flow model for the analysis of debris-flow hazards and countermeasures thereof / Pianese, Domenico; L., Barbiero. - STAMPA. - 1:(2003), pp. 705-716. (Intervento presentato al convegno 3rd International Conference on “Debris-Flow Hazards and Mitigation: Mechanics, Predictions and Assessment tenutosi a Davos (Switzerland) nel 10-12 settembre 2003).
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/11588/190584
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 2
social impact