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Central scheme for two-dimensional dam-break flow simulation
No full textA new second-order central scheme (KT), proposed by
Kurganov and Tadmor, have been used for the solution of the
two-dimensional dam-break problem. After having assumed as basis of
the dam-break phenomenon the set of 2D nonhomogeneous Saint-Venant equations, the
KT scheme in its semi-discrete second-order form has been extended for taking into
account the presence of a source term. Time integration has been performed by using a
third-order TVD Runge-Kutta scheme.
To demonstrate the accuracy of this explicit method,
the solution obtained by this model for a dam-break problem of
one-dimensional flow has been compared with the corresponding analytical solution,
moreover, the solutions
obtained for two test cases of two-dimensional flow have been
compared with the experimental
results
Ricostruzione di idrogrammi sperimentali su superfici impermeabili
Full text linkSe reconstruyen algunas experiencias clásicas de escorrentía sobre superficies impermeables bajo condiciones de lluvia simulada, mediante el empleo de un programa de cálculo que implenta las ecuaciones completas de Saint-Venant en forma unidimensional, efectuadas en algunos laboratorios y trasladadas a la literatura científica. El algoritmo empleado resuelve numéricamente las ecuaciones completas de Saint-Venant mediante un esqema de tipo Taylor-Galerkin del segundo orden en dos pasos
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