A finite volume method for a 2D dam-break simulation on a wet bed using a modified HLLC scheme
Tarih
2023Yazar
Salamttalab, Mohammad Milad
Parmas, Behnam
Mustafa Alee, Hedi
Hooshyaripor, Farhad
Danandeh Mehr, Ali
Vosoughifar, Hamidreza
Hosseini, Seyed Abbas
Maghrebi, Mohsen
Noori, Roohollah
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his study proposes a numerical model for depth-averaged Reynolds equations (shallow-water equations) to investigate a dam-break problem, based upon a two-dimensional (2D) second-order upwind cell-center finite volume method. The transportation terms were modelled using a
modified approximate HLLC Riemann solver with the first-order accuracy. The proposed 2D model
was assessed and validated through experimental data and analytical solutions for several dam-break
cases on a wet and dry bed. The results showed that the error values of the model are lower than those
of existing numerical methods at different points. Our findings also revealed that the dimensionless
error parameters decrease as the wave propagates downstream. In general, the new model can model
the dam-break problem and captures the shock wave superbly.