General longshore transport model
| Autor: | Giovanni Malara, Giuseppe Roberto Tomasicchio, Giuseppe Barbaro, Felice D'Alessandro |
|---|---|
| Přispěvatelé: | Tomasicchio, Giuseppe, D'Alessandro, Felice, G., Barbaro, G., Malara |
| Rok vydání: | 2013 |
| Předmět: |
Gravel beache
Environmental Engineering Berm Mobility index Reshaping or berm breakwater Ocean Engineering Geometry Stability (probability) Nominal size Waves and shallow water Longshore drift Longshore transport Breakwater Wave height Range (statistics) Geotechnical engineering Sandy beache Mathematics |
| Zdroj: | Coastal Engineering. 71:28-36 |
| ISSN: | 0378-3839 |
| DOI: | 10.1016/j.coastaleng.2012.07.004 |
| Popis: | In the present paper a general longshore transport (LT) model is proposed after a re-calibration of the model originally introduced by Lamberti and Tomasicchio (1997) based on a modified stability number, N s ⁎⁎ , for stone mobility at reshaping or berm breakwaters. N s ⁎⁎ resembles the traditional stability number ( Ahrens, 1987 ; van der Meer, 1988) taking into account the effects of a non-Rayleighian wave height distribution at shallow water ( Klopman and Stive, 1989 ), wave steepness, wave obliquity, and nominal diameter of the units. Nine high-quality data sets from field and laboratory experiments have been considered to extend the validity of the original model for a wider mobility range of the units: from stones to sands. The predictive capability of the proposed model has been verified against the most popular formulae in literature for the LT estimation of not cohesive units at a coastal body. The comparison showed that the model gives a better agreement with the physical data with respect to the other investigated formulae. The proposed transport model presents a main advantage with respect to other formulae: it can represent an engineering tool suitable for a large range of conditions, from sandy beaches till reshaping breakwaters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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