These figures show numerical simulations of the open channel flow in complex cases like those highly unsteady and/or containing shock waves. Solutions of the 2D Saint-Venant equations with source terms were obtained with finite volumes using rectangular and unstructured triangular meshes. A proper wet-dry strategy was implemented. Further details can be found in:

Sabat. I., Link, O. and Ettmer, B.: The dambreak induced flow: Analysis through numerical modeling. Water Technology and Sciences (in Spanish) 6(1), (2015).
 

Related animations in: http://www2.udec.cl/~olink/JAZZ2Dc.htm