Journal of Waterway, Port, Coastal, and Ocean Engineering: Recent submissions
Now showing items 701-720 of 2264
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Engineering Modeling of Wave Transmission of Reef Balls
(American Society of Civil Engineers, 2014)Reef Balls are hemispherical concrete units, which feature hydrogen ion concentration neutralized concrete and specialized surface textures to promote the growth of marine life. Reef Balls can be arranged in different ... -
Wave Runup in a Sand Bed Physical Model
(American Society of Civil Engineers, 2014)The extreme phenomena induced by climate change have generated new interest in analyses of wave runup on beaches. Extreme runup quantification is essential for coastal management and protection against coastal flooding. ... -
Structural Performance of a Floating Breakwater for Different Mooring Line Typologies
(American Society of Civil Engineers, 2014)In the current study, the effect of mooring line typology and layout upon the structural behavior of a floating breakwater (FB) is studied. Different elastic anchor stiffness levels and initial pretensions were analyzed ... -
Numerical Investigation of Turbulence Modulation by Sediment-Induced Stratification and Enhanced Viscosity in Oscillatory Flows
(American Society of Civil Engineers, 2014)Recent turbulence-resolving simulations of fine sediment transport in the oscillatory bottom boundary layer (OBBL) revealed the existence of a diverse range of flow regimes over muddy seabeds. Transitions between these ... -
Rip Current Observations via Marine Radar
(American Society of Civil Engineers, 2014)New remote sensing observations that demonstrate the presence of rip current plumes in X-band radar images are presented. The observations collected on the Outer Banks (Duck, North Carolina) show a regular sequence of ... -
Numerical Simulation of Two-Dimensional Regular Wave Overtopping Flows over the Crest of a Trapezoidal Smooth Impermeable Sea Dike
(American Society of Civil Engineers, 2014)The objectives of the current study are to develop a two-phase flow solver and to investigate the two-dimensional regular wave overtopping flow field over a sea dike. The solver is based on the Navier-Stokes equations and ... -
Turbulence Measurement of Combined Wave and Surge Overtopping of a Full-Scale HPTRM-Strengthened Levee
(American Society of Civil Engineers, 2014)A combination of storm surge and extreme waves may cause overtopping of coastal protection structures such as levees, dikes, and seawalls, resulting in structural damage and flooding behind these structures. High turbulence ... -
Numerical Study of Sandbar Migration under Wave-Undertow Interaction
(American Society of Civil Engineers, 2014)Reliable simulation of onshore-offshore sandbar migration under various wave and current conditions has remained a challenging task over the last three decades because wave-undertow interaction in the surf zone has been ... -
Stability of Breakwater Armor Units against Tsunami Attacks
(American Society of Civil Engineers, 2014)The design of breakwater armor units against tsunami attacks has received little attention in the past because of the comparative low frequency of these events and the rarity of structures designed specifically to withstand ... -
2D Modeling of Flow and Sediment Interaction: Sediment Mixtures
(American Society of Civil Engineers, 2014)The further development and application of the two-dimensional (2D) flow and sediment-modeling concept, formulated for the treatment of sediment mixtures, is addressed herein. The sediment domain is divided into subdomains ... -
Smoothed-Particle Hydrodynamics Numerical Modeling of Structures Impacted by Tsunami Bores
(American Society of Civil Engineers, 2014)Recently, major tsunami events have resulted in considerable damage to low-lying coastal developments as well as significant loss of life. This is owing to the fact that coastal communities and associated infrastructure ... -
Experimental Study on Real-Time Tsunami Protection Structures
(American Society of Civil Engineers, 2014)Two kinds of new tsunami protection structures have been developed: a flap-gate breakwater named FLAPGATE, and a flap-gate seawall named No Energy and no Operation Rising Seawall (NEORISE). These structures are similar to ... -
New Physical Insights and Design Formulas on Wave Overtopping at Sloping and Vertical Structures
(American Society of Civil Engineers, 2014)Mean wave overtopping discharge is a key design parameter for many coastal structures, typically designed to limit overtopping discharge to below a chosen admissible value. Dutch, German, and British design guidance from ... -
Ship-Generated Waves and Induced Turbidity in the Göta Älv River in Sweden
(American Society of Civil Engineers, 2014)Ship-generated waves were investigated in the Göta Älv river, which is a major waterway on the Swedish west coast between the sea and Lake Vänern. Ships with a typical size of -
Procedure for Site Assessment of the Potential for Tsunami Debris Impact
(American Society of Civil Engineers, 2014)Tsunami debris can place large demands on the structures it impacts. The types of potential debris and impact forces they generate are not well understood, and relatively little consideration is taken for the risk of tsunami ... -
Numerical Simulation of a Rising Seawall for Coastal Flood Protection
(American Society of Civil Engineers, 2014)The no-energy and no-operation rising seawall (NEORISE) is a new type of structure for protection against tsunamis and coastal flooding. It is installed in a gap in flood defenses and usually rests on land. It can close ... -
Heterogeneous Packing and Hydraulic Stability of Cube and Cubipod Armor Units
(American Society of Civil Engineers, 2014)This paper describes the heterogeneous packing (HEP) failure mode of breakwater armor. HEP reduces packing density in the armor layer near and above the mean water level and increases packing density below it. With HEP, ... -
Empirical Models of the Loop Current Eddy Detachment/Separation Time in the Gulf of Mexico
(American Society of Civil Engineers, 2014)Eddies pinching off the Loop Current can have a significant impact on offshore exploration and production activities in the Gulf of Mexico. Advance knowledge of an eddy shedding event would be of considerable value to the ... -
Vertical Variability of Undertow and Longshore Currents outside the Surf Zone
(American Society of Civil Engineers, 2014)Undertow and longshore current profiles outside of the surf zone were analyzed using a canonical situation involving an alongshore-uniform barred beach. Forcing mechanisms due to the presence of surface gravity waves are ... -
Comprehensive Field Study of Swash-Zone Processes. II: Sheet Flow Sediment Concentrations during Quasi-Steady Backwash
(American Society of Civil Engineers, 2014)Sheet flow sediment concentration profiles were measured in natural conditions for the first time as part of a comprehensive field study on swash-zone hydrodynamics and sediment transport. Three conductivity concentration ...