Experimental Study of Tsunami-Like Waves Generated with a Vertical Release Technique on Dry and Wet Beds

Experimental Study on Extreme Hydrodynamic Loading on Pipelines. Part 1: Flow Hydrodynamics

“…The experimental results agree with a study conducted by Lauber and Hager [42] where the bed roughness was shown to have a significant effect close to the wave fronts. They further concluded what other studies, i.e., Wüthrich et al [26] also found, namely Ritter's solution does not accurately represent the dam-break flow at the vicinity of the wave front because of the bed roughness.…”

“…The data shows a steeper bore front and more abrupt water level rise in the case of the bore propagating over wet bed when compared to dry bed. Other researchers, i.e., Nouri et al [29] and Wüthrich et al [26], also found a similar behavior. According to Wüthrich et al [26] the behavior of a bore propagating on the wet bed at the wave front, is similar to a turbulent and highly aerated hydraulic jump which causes a more abrupt water level rise compared to wave propagating over dry bed condition.…”

“…The constant value depends on the flume hydraulic radius and roughness coefficient. Wüthrich et al [26] suggest ∝ = 1.25, while Matsutomi and Okatamo [4] suggest ∝ = 1.1. Figure 7 shows results from the current study, together with the previous studies mentioned above.…”

“…They characterized wave momentum and wave front velocity at the beginning of the wave propagation in tsunamis and compared them to the classical dam-break waves. Wuthrich et al [26] proposed a new method to generate bores over dry and wet bed conditions and investigated the influence of different parameters of the wave, such as the bore front celerity and the flow velocity profile. Moreover, studies, such as St. German et al [27] and Douglas and Nistor [28] have investigated the effect of bed condition on tsunami characteristics numerically.…”

Experimental study on the hydrodynamic impact of tsunami-like waves against impervious free-standing buildings

“…Some of the major formulae found in literature to compute waveinduced loads are presented in Table 2. Wüthrich et al (2018) carried out a recent study focusing on the wave hydrodynamics properties of bores and surges generated using the vertical release of a controlled volume of water. These findings in terms of velocity profiles and momentum flux are used herein to quantify the hydrodynamic loads induced by the generated surges and bores onto a free-standing building.…”