  Free surface flow problems including mixing processes in dam break flows and
wave breaking phenomena are characterized by large deformation of the free
surface. As such, they cannot be easily investigated by analytical and
numerical mesh based models. In this paper a new method called un-smoothed
particle hydrodynamics (SPH-i) solver is tested to study how well it can
capture wave breaking and mixing of water bodies in 2D dam-break flows over wet
beds. The model captures the breaking and mixing processes relatively well when
compared against experimental results. Therefore, it can be inferred that the
capability of the proposed model to predict the development and evolution of
breaking waves as well as the interface at the water-water interface in
dam-break mixing processes has been demonstrated.
