Work

Flooding as a sub-critical instability in open channels

Year: 2024

Type: article

Abstract: During floods caused by a continuous increase in river flow, the water level often rises suddenly, while the recession takes much longer. This behavior is consistent with the subcritical instability highlighted in this article. This instability emerges for uniform, quasi-stationary flows at high Reynolds numbers in a channel. With increasing flow, a sudden jump in water level occurs when a well-defined flow rate is reached. If the flow rate subsequently decreases, the water level drops again suddenly, but at a flow rate well below the previous one.

Source: Physical Review Fluids

DOI: 10.1103/physrevfluids.9.084607

Authors: Serge Mora, Martine Le Berre, Yves Pomeau

Institutions: Université de Montpellier, Laboratoire de Mécanique et Génie Civil, École Polytechnique, Laboratoire d'Hydrodynamique de l'École polytechnique, Institut Polytechnique de Paris

Language: English

Topic: Hydraulic flow and structures

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4401612186

FWCI: 0.169

Cites: 20

Cited by: 1

Related to: 10