On the relevance of the dam break problem in the context of nonlinear shallow water equations.

*(English)*Zbl 1330.76021Summary: The classical dam break problem has become the de facto standard in validating the nonlinear shallow water equations 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.

Reviewer: Reviewer (Berlin)

##### MSC:

76B15 | Water waves, gravity waves; dispersion and scattering, nonlinear interaction |

76T10 | Liquid-gas two-phase flows, bubbly flows |

74S10 | Finite volume methods applied to problems in solid mechanics |

86A05 | Hydrology, hydrography, oceanography |

35Q35 | PDEs in connection with fluid mechanics |