Experimental Investigation on the Impact of Dam-Break Induced Surges on a Vertical Wall

This paper presents the results of an experimental investigation on impact dam-break-induced surges a vertical wall. The instantaneous surge height and dynamic pressure wall were measured for with different reservoir depths H = 200 mm, 250 300 mm. time-histories horizontal using miniaturized transducers, heights recorded ultrasonic sensor. relationships between during obtained from raw data. highlighted detailed processes variation propagation, wall, runup, falling, breakup turbulent flow. analyzed, compared hydrostatic to study wave breaking mechanism tsunami waves Dynamic pressures at instant found be approximately three times corresponding static in bed, good agreement previous research Moreover, maximum runup 2.1 2.3 initial depths. distributions divided into two hydrodynamic regimes. Based duration, first regime occurred less than 0.1 s after highly non-linear distributions, second showed semi-hydrostatic distribution 0.5 0.7 s. presented this are suitable design coastal infrastructures can used validate numerical models.