In the present work numerical results of a 1D mathematical model for Dam-Break flows, based on MacCormack shock-capturing scheme, are compared with experimental tests realised in presence of abrupt bottom variations. The laboratory investigation has been carried out in a tilting flume in which bumps of relevant height, if compared to water depth at the dam section, were placed; this causes shock formation, strong surface curvatures and reverse flow. Numerical results show quite a satisfactory agreement with experimental data, even if the considered configurations violate, almost locally, some St. Venant hypotheses. This confirms the applicability of the numerical model even in limit conditions that could occur in nature.
Dam-Break flows in presence of abrupt bottom variations / Aureli, Francesca; Mignosa, Paolo; Tomirotti, M.. - CD-ROM. - su CD-Rom:(1999). (Intervento presentato al convegno XXVIII IAHR Congress, Graz, Austria nel 22-27 Agosto 1999).
Dam-Break flows in presence of abrupt bottom variations
AURELI, Francesca;MIGNOSA, Paolo;
1999-01-01
Abstract
In the present work numerical results of a 1D mathematical model for Dam-Break flows, based on MacCormack shock-capturing scheme, are compared with experimental tests realised in presence of abrupt bottom variations. The laboratory investigation has been carried out in a tilting flume in which bumps of relevant height, if compared to water depth at the dam section, were placed; this causes shock formation, strong surface curvatures and reverse flow. Numerical results show quite a satisfactory agreement with experimental data, even if the considered configurations violate, almost locally, some St. Venant hypotheses. This confirms the applicability of the numerical model even in limit conditions that could occur in nature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
