Large-Scale and Small-Scale Effects in Wave Breaking Interaction on Vertical Wall Attached With Large Recurve Parapet

Abstract

Two sets of experiments on the vertical wall attached with recurve parapets performed at 1:1 and 1:8 scale are compared to study the influence of scale, model and laboratory effects. The small-scale (1:8) experiment scaled to large-scale (1:1) using Froude scaling, and Cuomo et al. (2010) method are compared. Comparing both the methods for scaling impact pressure, Cuomo et al. (2010) predicts well in the impact zone, whereas Froude scaling is better in the up-rushing zone. In estimating integrated impact force, Froude scaling method over-estimates compared to Cuomo et al. (2010). Overall, Cuomo et al. (2010) work better for scaling up impact pressure and forces compared to Froude scaling method. These preliminary observations are based on one type of recurved parapets only.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/w9WipBjMWzw

Open-FOAM computations of breaking wave impact on a vertical wall with a recurved parapet

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The present paper describes the numerical approach used for the computations of breaking wave impact on a vertical wall with a recurved parapet. The simulations will concern the configuration at 1:1 large scale (RAVINDAR et al, 2019(RAVINDAR et al, , 2020 RAVINDAR & SRIRAM, 2021), for which experiments were performed in Coastal Research Centre (Forschungs Zentrum Küste, FZK), Hannover, Germany. In terms of numerical code, the OpenFOAM numerical toolbox will be used.

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“…According to these results, the validated numerical model is used to reproduce the experiments performed byRAVINDAR et al, (2020) and RAVINDAR & SRIRAM (2021) for a Stokes second order waves of 0.7m height and 6s period at a water depth of 4.1m (see figure2).…”

“…Figure 2. (left)RAVINDAR et al,(2020) proposed wave theory(LE MÉHAUTÉ, 1976) and (right) Grid mesh convergence study for the same wave theory.…”