On the relevance of the dam break problem in the context of nonlinear shallow water equations
Abstract
The classical dam break problem has become the de facto standard in validating the Nonlinear Shallow Water Equations (NSWE) solvers. Moreover, the NSWE are widely used for flooding simulations. While applied mathematics community is essentially focused on developing new numerical schemes, we tried to examine the validity of the mathematical model under consideration. The main purpose of this study is to check the pertinence of the NSWE for flooding processes. From the mathematical point of view, the answer is not obvious since all derivation procedures assumes the total water depth positivity. We performed a comparison between the two-fluid Navier-Stokes simulations and the NSWE solved analytically and numerically. Several conclusions are drawn out and perspectives for future research are outlined.
Domains
Fluid mechanics [physics.class-ph] Fluids mechanics [physics.class-ph] Hydrology Global Changes Oceanography Reactive fluid environment Geophysics [physics.geo-ph] Geophysics [physics.geo-ph] Numerical Analysis [math.NA] Computational Physics [physics.comp-ph] Fluid Dynamics [physics.flu-dyn] Atmospheric and Oceanic Physics [physics.ao-ph] Ocean, AtmosphereOrigin | Files produced by the author(s) |
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