The solution of the dam-break problem in the porous shallow water equations

L Cozzolino, V Pepe, L Cimorelli, A D'Aniello… - Advances in water …, 2018 - Elsevier
Abstract The Porous Shallow water Equations are commonly used to evaluate the
propagation of flooding waves in the urban environment. These equations may exhibit not …

Coping with geometric discontinuities in porosity-based shallow water models

G Varra, R Della Morte, L Cimorelli, L Cozzolino - Physics of Fluids, 2023 - pubs.aip.org
The use of classic two-dimensional (2D) shallow water equations (SWE) for flooding
simulation in complex urban environments is computationally expensive, due to the need of …

Numerical solution of the discontinuous-bottom shallow-water equations with hydrostatic pressure distribution at the step

L Cozzolino, R Della Morte, C Covelli… - Advances in Water …, 2011 - Elsevier
Free-surface flows are usually modelled by means of the Shallow-water Equations: this
system of hyperbolic equations exhibits a source term which is proportional to the product of …

Efficient analytical implementation of the DOT Riemann solver for the de Saint Venant–Exner morphodynamic model

F Carraro, A Valiani, V Caleffi - Advances in water resources, 2018 - Elsevier
Within the framework of the de Saint Venant equations coupled with the Exner equation for
morphodynamic evolution, this work presents a new efficient implementation of the Dumbser …

Extended theory of hydraulic hysteresis in open-channel flow

DP Viero, A Defina - Journal of Hydraulic Engineering, 2017 - ascelibrary.org
The occurrence of hysteresis in a supercritical, open-channel flow approaching an obstacle
has been recognized and investigated both experimentally and theoretically over the last …

Well-balanced bottom discontinuities treatment for high-order shallow water equations WENO scheme

V Caleffi, A Valiani - Journal of Engineering Mechanics, 2009 - ascelibrary.org
A finite volume well-balanced weighted essentially nonoscillatory (WENO) scheme, fourth-
order accurate in space and time, for the numerical integration of shallow water equations …

Momentum balance in the shallow water equations on bottom discontinuities

A Valiani, V Caleffi - Advances in Water Resources, 2017 - Elsevier
This work investigates the topical problem of balancing the shallow water equations over
bottom steps of different heights. The current approaches in the literature are essentially …

[HTML][HTML] A comparison between bottom-discontinuity numerical treatments in the DG framework

V Caleffi, A Valiani, G Li - Applied Mathematical Modelling, 2016 - Elsevier
In this work, using an unified framework consisting in third-order accurate discontinuous
Galerkin schemes, we perform a comparison between five different numerical approaches to …

Well balancing of the SWE schemes for moving-water steady flows

V Caleffi, A Valiani - Journal of Computational Physics, 2017 - Elsevier
In this work, the exact reproduction of a moving-water steady flow via the numerical solution
of the one-dimensional shallow water equations is studied. A new scheme based on a …

Dam break in rectangular channels with different upstream-downstream widths

A Valiani, V Caleffi - Advances in Water Resources, 2019 - Elsevier
The classic Stoker dam-break problem (Stoker, 1957) is revisited in cases of different
channel widths upstream and downstream of the dam. The channel is supposed to have a …