Groins are a kind of structures which constructed to prevent the coastal areas from erosion and to manage the direction of flow. However, the groin body and related flow features are the main causes of local corrosion. In this study, we investigate the flow patterns around refractive and right-angle groins. The flow characteristics around a refractive groin are compared numerically and study to achieve a reliable right-angle groin of various projected lengths. The results indicate that the relation between the thalweg height and geometry of the channel and groin length can be approximated using linear formulas regardless of internal celerity in the flow region.
The wave force exerted on vertical piles of offshore structures is the main criterion in designing them. In structures with more than one large pile, the influence of piles on each other is one of the most important issues being concerned in past researches. An efficient method for determining the interaction of piles is introduced in present research. First the wave force is calculated by the exact method using the diffraction theory, then in the finite difference numerical method the force is calculated by adding the velocity potentials of each pile and integration of pressure on their surface. The results showed that the ratio of the wave force on each of the double piles to a single pile has a damped oscillation around unity in which the amplitude of oscillation decreases with the increase in the spacing parameter. Also different wave incident directions and diffraction parameters were used and the results showed that the numerical solution has acceptable accuracy when the diffraction parameter is larger than unity.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.