Continuous formulation for bottom friction in free surface flows modelling

Machiels, Olivier; Erpicum, Sébastien; Archambeau, Pierre; Dewals, Benjamin; Pirotton, Michel

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Continuous formulation for bottom friction in free surface flows modelling

Machiels, Olivier; Erpicum, Sébastien; Archambeau, Pierre et al.

2009 • In River Basin Management V

Peer reviewed

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https://hdl.handle.net/2268/28209

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Keywords :

friction; shallow water; modelling

Abstract :

[en] Bottom friction modelling is an important step in river flows computation with 1D or 2D solvers. It is usually performed using empirical laws established for uniform flow conditions or a modern approach based on turbulence analysis. Following the definition of the flow validity field of the main friction laws proposed in the literature, an original continuous formulation has been developed. It is suited to model river flows with a wide range of properties (water depth, discharge, roughness…). The efficiency of this new formulation, theoretically established and numerically adjusted, is demonstrated through various practical applications.

Research Center/Unit :

HACH

Disciplines :

Civil engineering

Author, co-author :

Machiels, Olivier ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Erpicum, Sébastien ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydraulique génér., const. hydraul. et méc. des fluides

Archambeau, Pierre ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Dewals, Benjamin ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Pirotton, Michel ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)

Language :

English

Title :

Continuous formulation for bottom friction in free surface flows modelling

Publication date :

2009

Event name :

River Basin Management V

Event organizer :

Wessex Institute of Technology

Event place :

Malta

Audience :

International

Main work title :

River Basin Management V

Peer reviewed :

Peer reviewed

Available on ORBi :

since 13 November 2009

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Bibliography

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