Numerical study of irregular wave overtopping and overflow
Wave overtopping is one of the most important processes for the design of seawalls. During the past 50 years methods for predicting wave overtopping of coastal structures have continuously been developed. However, it is evident from the existing literature that additional investigations into overtop...
| Main Author: | |
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| Format: | Thesis (University of Nottingham only) |
| Language: | English |
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2003
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| Online Access: | https://eprints.nottingham.ac.uk/10111/ |
| _version_ | 1848791035330691072 |
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| author | Soliman, Akram S M |
| author_facet | Soliman, Akram S M |
| author_sort | Soliman, Akram S M |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Wave overtopping is one of the most important processes for the design of seawalls. During the past 50 years methods for predicting wave overtopping of coastal structures have continuously been developed. However, it is evident from the existing literature that additional investigations into overtopping of small positive, zero and negative freeboard are needed. The present thesis describes numerical investigations based in this background. Wave overtopping is dependent on the processes associated with wave breaking. Therefore, a two dimensional breaking wave numerical model has been developed and used to study the phenomena of wave overtopping. The model is based on the Reynolds averaged Navier-Stokes equations for the mean flow and k-epsilon equations for turbulent kinetic energy, k, and the turbulence dissipation rate, epsilon. The model accuracy in simulating propagation of linear and irregular waves has been evaluated. The overall performance of the model is considered satisfactory. The development of guidelines for calculating overtopping discharge for different seawall slopes is presented. All slopes have been subjected to a wide range of irregular waves. The influence of how the slopes of seawalls, wave type (breaking and non-breaking) and crest freeboard affect the overtopping discharges has been investigated. Based on the numerical data, a new expression for breaking and non-breaking waves on smooth impermeable slopes is proposed. With the new expression it is possible to predict overtopping discharges of smooth seawalls in small positive, zero and negative freeboard. |
| first_indexed | 2025-11-14T18:22:06Z |
| format | Thesis (University of Nottingham only) |
| id | nottingham-10111 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T18:22:06Z |
| publishDate | 2003 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-101112025-02-28T11:07:11Z https://eprints.nottingham.ac.uk/10111/ Numerical study of irregular wave overtopping and overflow Soliman, Akram S M Wave overtopping is one of the most important processes for the design of seawalls. During the past 50 years methods for predicting wave overtopping of coastal structures have continuously been developed. However, it is evident from the existing literature that additional investigations into overtopping of small positive, zero and negative freeboard are needed. The present thesis describes numerical investigations based in this background. Wave overtopping is dependent on the processes associated with wave breaking. Therefore, a two dimensional breaking wave numerical model has been developed and used to study the phenomena of wave overtopping. The model is based on the Reynolds averaged Navier-Stokes equations for the mean flow and k-epsilon equations for turbulent kinetic energy, k, and the turbulence dissipation rate, epsilon. The model accuracy in simulating propagation of linear and irregular waves has been evaluated. The overall performance of the model is considered satisfactory. The development of guidelines for calculating overtopping discharge for different seawall slopes is presented. All slopes have been subjected to a wide range of irregular waves. The influence of how the slopes of seawalls, wave type (breaking and non-breaking) and crest freeboard affect the overtopping discharges has been investigated. Based on the numerical data, a new expression for breaking and non-breaking waves on smooth impermeable slopes is proposed. With the new expression it is possible to predict overtopping discharges of smooth seawalls in small positive, zero and negative freeboard. 2003 Thesis (University of Nottingham only) NonPeerReviewed application/pdf en arr https://eprints.nottingham.ac.uk/10111/1/soliman.pdf Soliman, Akram S M (2003) Numerical study of irregular wave overtopping and overflow. PhD thesis, University of Nottingham. wave overtopping overflow computational fluid dynamics CFD |
| spellingShingle | wave overtopping overflow computational fluid dynamics CFD Soliman, Akram S M Numerical study of irregular wave overtopping and overflow |
| title | Numerical study of irregular wave overtopping and overflow |
| title_full | Numerical study of irregular wave overtopping and overflow |
| title_fullStr | Numerical study of irregular wave overtopping and overflow |
| title_full_unstemmed | Numerical study of irregular wave overtopping and overflow |
| title_short | Numerical study of irregular wave overtopping and overflow |
| title_sort | numerical study of irregular wave overtopping and overflow |
| topic | wave overtopping overflow computational fluid dynamics CFD |
| url | https://eprints.nottingham.ac.uk/10111/ |