Dissipation in random wave groups incident on a beach

Roelvink, J.A.

Dissipation in random wave groups incident on a beach

Title

Dissipation in random wave groups incident on a beach

Author

Roelvink, J.A.

Corporate name

TU Delft

Date

1992-02-13

Abstract

The transformation of certain parameters of an incident random wave train across the surf zone has been the subject of much study and modelling effort. In recent literature, two classes of models have been developed, which are both based on the wave energy balance or the wave action equation, but use markedly different approaches. The main goal of this study is to develop a suitable formulation for the time-varying dissipation due to wave breaking. As it is impossible to measure the time-varying dissipation directly, the formulation can only be checked by building it into models that predict measurable parameters, such as the average dissipation, the fraction of breaking waves and the mean wave energy, and by verifying these models both externally and internally. For this purpose, one wave propagation model of the probabilistic class and three models of the parametric class were formulated, calibrated and verified in this study, all based on the same dissipation formulation. Although it has not been the primary goal of the study, these models are an interesting by-product in themselves.

Subject

wave dissipation
wave breaking
surf zone

Classification

TLJ400200

To reference this document use:

http://resolver.tudelft.nl/uuid:2401f5c8-f8d0-4e9d-b1bd-b9630b384e53

Publisher

Deltares (WL)

Source

Internal memo

Part of collection

Hydraulic Engineering Reports