Research output per year
Research output per year
Christopher H. Lashley*, Barbara Zanuttigh, Jeremy D. Bricker, Jentsje van der Meer, Corrado Altomare, Tomohiro Suzuki, Volker Roeber, Patrick Oosterlo
Research output: Contribution to journal › Article › Scientific › peer-review
Practitioners often employ diverse, though not always thoroughly validated, numerical models to directly or indirectly estimate wave overtopping (q) at sloping structures. These models, broadly classified as either phase-resolving or phase-averaged, each have strengths and limitations owing to the physical schematization of processes within them. Models which resolve the vertical flow structure or the full wave spectrum (i.e. sea-swell (SS) and infragravity (IG) waves) are considered more accurate, but more computationally demanding than those with approximations. Here, we assess the speed-accuracy trade-off of six well-known models for estimating q, under shallow foreshore conditions. The results demonstrate that: i) q is underestimated by an order of magnitude when IG waves are neglected; ii) using more computationally-demanding models does not guarantee improved accuracy; and iii) with empirical corrections to incorporate IG waves, phase-averaged models like SWAN can perform on par, if not better than, phase-resolving models but with far less computational effort.
Original language | English |
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Article number | 104740 |
Number of pages | 14 |
Journal | Environmental Modelling and Software |
Volume | 130 |
DOIs | |
Publication status | Published - 2020 |
Research output: Thesis › Dissertation (TU Delft)