Prediction of berm geometry using a set of laboratory tests combined with teaching–learning-based optimization and artificial bee colony algorithms

• Published in: Applied ocean research Vol. 48; pp. 103 - 113
• Main Authors: Uzlu, Ergun, Kömürcü, Murat İhsan, Kankal, Murat, Dede, Tayfun, Öztürk, Hasan Tahsin
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-10-2014
• Subjects: Accretion; Artificial bee colony algorithm; Berm; Coastal profiles; Cross-shore sediment transport; Marine; Teaching–learning-based optimization; Coastal profiles; Berm; Artificial bee colony algorithm; Accretion; Cross-shore sediment transport; Teaching–learning-based optimization
• ISSN: 0141-1187; 1879-1549
• DOI: 10.1016/j.apor.2014.08.002

•This study is associated with the prediction of berm geometric parameters.•An experimental study was performed in a wave flume using regular waves.•Equations were found for each parameter using TLBO and ABC algorithms.•The proposed TLBO algorithm predicts the berm parameter better than ABC algorithm.•It was concluded that the equations successfully determined the berm parameters.
Understanding sediment movement in coastal areas is crucial in planning the stability of coastal structures, the recovery of coastal areas, and the formation of new coast. Accretion or erosion profiles form as a result of sediment movement. The characteristics of these profiles depend on the bed slope, wave conditions, and sediment properties. Here, experimental studies were performed in a wave flume with regular waves, considering different values for the wave height (H0), wave period (T), bed slope (m), and mean sediment diameter (d50). Accretion profiles developed in these experiments, and the geometric parameters of the resulting berms were determined. Teaching–learning-based optimization (TLBO) and artificial bee colony (ABC) algorithms were applied to regression functions of the data from the physical model. Dimensional and dimensionless equations were found for each parameter. These equations were compared to data from the physical model, to determine the best equation for each parameter and to evaluate the performances of the TLBO and ABC algorithms in the estimation of the berm parameters. Compared to the ABC algorithm, the TLBO algorithm provided better accuracy in estimating the berm parameters. Overall, the equations successfully determined the berm parameters.