Journal of the Waterways, Harbors and Coastal Engineering Division 

About: Journal of the Waterways, Harbors and Coastal Engineering Division is an academic journal. The journal publishes majorly in the area(s): Wind wave & Surface wave. It has an ISSN identifier of 0044-8028. Over the lifetime, 230 publications have been published receiving 4069 citations.

Friction Factor under Oscillatory Waves

Abstract: Tests were performed in an oscillating water tunnel to determine the relationships between wave parameters and resulting bottom friction and shear stresses. The test results are presented in Stanton-type wave friction factor diagrams and results are compared with existing semitheoretical expressions. Transitions between flow regimes are also defined.

Longshore Transport Computations

Abstract: The longshore transport along a sandy beach resulting from the combination of a longshore current and waves is computed. This computational procedure is based on the principle that because of the waves the bed shear of the current is increased. The bed load can be computed with any bed load formula (the formula of Frijlink which is commonly used at the Delft Hydraulics Laboratory is used in the paper), taking into account the previously mentioned effects of the waves. The transport in suspension is computed according to the procedure suggested by Einsgein. The influence of the assumed thickness of the layer in which the bed load is considered to take place and which determines the concentration of suspended material at the bed is presented. The results of measurements in a laboratory basin and along the coast of Queensland (Australia), are presented.

Water Waves Generated by Landslides

Abstract: The problem of water waves generated by landslides is studied by considering two distinct types of landslide; vertical and horizontal. The vertical landslide is studied by assuming that the landslide is modeled by a two-dimensional box falling vertically. A horizontal landslide is one which enters and moves through the water horizontally and is modeled analytically by a two-dimensional wall which moves into the fluid domain. Theoretical solutions are obtained assuming that the geometric and dynamic parameters of the problem are known. Graphs are presented for motion with constant velocity. For the vertical landslide problem, experiments were performed to verify this theory and the results compare very favorably in the region where linearized theory is valid. An approximate method is developed to find the amplitude of the largest wave in the nonlinear region by utilizing the solutions obtained from linear theory for vertical landslides. This approximate method is then applied to the Lituya Bay, Alaska landslide of July 9, 1958 in order to estimate the largest wave.

Maximum breaker height

Abstract: Based on a re-evaluation of available experimental data on breaking waves, a relationship between the breaker height-breaking depth ratio, the incident wave steepness and the beach slope is found. This relationship, when combined with experimental observations of breaker travel, permits an estimate of the maximum breaking wave height a coastal structure might experience given a design wave period and design depth at the structure site. Breaker-type classification according to inshore and offshore parameters as presently defined cannot be reconciled to observations of the relationship between breaker-height index, wave steepness and beach slope. Revised criteria for breaker classification are presented.

Mass Transport by Waves and Offshore Sand Bedforms

Abstract: Mass transport inside the oscillatory bottom layer near the sea bottom is studied for three-dimensional wave motion. Influence on the transport of fine and coarse sand and significance to the sea bottom morphology are presented.