Impact pressure of dam-break waves on a vertical wall with various downstream conditions by an explicit mesh-free method

Numerical study of the wave impacts generated in a wet dam break

“…• compared to impact pressures recorded or simulated with a dam break flow in previous studies (except the recent work of Zuo et al [59] already discussed), the present numerical work reached values one order of magnitude larger (i.e. P max ≈ 35ρgh or P max ≈ 30ρV 2 imp ).…”

“…and Abadie [45] for instance showed the heavy resolution requirement to achieve convergence at the stagnation point in a dry dam break impact. Impact pressures are also shown to slightly vary with mesh resolution in the mesh-free simulations presented in Zuo et al [59]. Methods used to track the interface are also susceptible to generates discrepancies in the peak pressure computed [34].…”

“…Larger depths ratio (i.e., downstream to upstream depths) were used for instance in Arnason [6] or in Hartana and Murakami [21] but the maximal pressure generated on the obstacle is always less than 5 ρgh which is the typical values for bore impacts. More recently, Zuo et al [59] employed a Large Eddy Simulation mesh-free incompressible model to study the impact of violent plunging breakers generated by large upstream to downstream water depth ratios. Relative pressure values p/ρgH (with H upstream water depth) of the order of 2 to 5 were obtained.…”