The upper crust is typically 7 ? 1 km thick, heterogeneous and has high velocity gradients. We review the results and propose a structural model that is consistent with all the observations. Numerous seismic studies, in particular using receiver functions and explosion seismology, have provided a detailed picture of the structure and thickness of the crust beneath the Iceland transverse ridge. The proposed model may be used to predict the response of a structure in the preliminary design stage for practical engineering. The triple semi-immersed Jarlan- type perforated breakwaters with significantly reduced C R, will enhance the structure's wave absorption ability, and lead to smaller wave forces compared with the double one. An economical triple semi-immersed Jarlan- type perforated breakwater can be designed with B/L = 0.25 and C R and C T ranging from 0.25 to 0.32 by choosing a relative draft d/h of 0.35 and a permeability parameter of the perforated front walls being 0.5 for an incident wave number kh nearly equal to 2.0. The results show that C R reaches the maximum value when B/L = 0.46 n while it is smallest when B/L=0.46 n+0.24 ( n=0, 1, 2.). The wave transmission coefficient C T reflection coefficient C R, and energy dissipation coefficient C E coefficients and the horizontal wave force exerted on the front and rear walls are examined. The numerical results show a good agreement with previous analytical results and experimental data for limiting cases of double partially immersed impermeable walls and double and triple Jarlan- type breakwaters. ![]() A numerical model based on linear wave theory and an eigenfunction expansion method has been developed to study the hydrodynamic characteristics of breakwaters. This study examines wave interactions with multiple semi-immersed Jarlan- type perforated breakwaters. Wave interactions with multiple semi-immersed Jarlan- type perforated breakwaters This study can give a better understanding of the hydrodynamic performance of comb- type caisson breakwaters. Compared with a traditional vertical wall breakwater, the wave force acting on a suitably designed comb- type caisson breakwater can be significantly reduced. Numerical examples are also presented to examine effects of caisson parameters on total wave forces acting on caissons and total wave forces acting on side plates. Diffusion reflection due to periodic variations in breakwater shape and corresponding surface elevations around the breakwater are analyzed. Analytical solution is validated by a multi-domain boundary element method solution for the present problem. Then, hydrodynamic quantities involving reflection coefficients and wave forces acting on breakwater are estimated. ![]() Unknown expansion coefficients in series solutions are determined by matching velocity and pressure of continuous conditions on the interface between two regions. By using periodic boundary condition and separation of variables, series solutions of velocity potentials in inner and outer regions are developed. The fluid domain is divided into inner and outer regions according to the geometrical shape of breakwater. This study develops an analytical solution for oblique wave interaction with a comb- type caisson breakwater based on linear potential theory. The result shows that soft computing techniques i.e., ANN, SVM and ANFIS can be efficient tools in predicting damage levels of non reshaped berm breakwater.Īnalysis of Oblique Wave Interaction with a Comb- Type Caisson Breakwater The experimental data are used to train ANN, SVM and ANFIS models and results are determined in terms of statistical measures like mean square error, root mean square error, correla-tion coefficient and scatter index. Soft computing techniques like Artificial Neural Network (ANN), Support Vector Machine (SVM) and Adaptive Neuro Fuzzy Inference system (ANFIS) models are constructed using experimental data sets to predict the damage level of non-reshaped berm breakwater. In the present study experimental data for non-reshaped berm breakwater are collected from Marine Structures Laboratory, Department of Applied Mechanics and Hydraulics, NITK, Surathkal, India. The damage analysis of coastal structure is very important as it involves many design parameters to be considered for the better and safe design of structure. Mandal, Sukomal Rao, Subba N., Harish Lokesha Damage level prediction of non-reshaped berm breakwater using ANN, SVM and ANFIS models
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