Prediction of Irregular Wave Overtopping.
Abstract
Rates of wave overtopping of structures can be predicted by means of an equation presented in the Shore Protection Manual (SPM) (eg. 7-6, U.S. Army, Corps of Engineers, Coastal Engineering Research Center, 1975; Weggel, 1976). Implicit in the use of this equation is the assumption of monochromatic waves; i.e., waves of uniform height and period. A question is given on what would the overtopping rate be fore irregular wave conditions having a significant height equal to the height of the monochromatic wave used in the SPM equation. An answer is given: the irregular wave conditions are assumed to cause the runup to have a Rayleigh distribution of the type commonly associated with wave heights. The runup with a Rayleigh distribution is used in the SPM's wave overtopping equation to predict average overtopping rates for irregular waves having a particular significant height. Example problems are given to illustrate how this technique can be used to predict overtopping rates for irregular wave conditions. A table, which can be used to calculate the irregular overtopping rate using the monochromatic rate for equivalent wave conditions is also given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1977
- Accession Number
- ADA049880
Entities
People
- John Ahrens
Organizations
- Coastal Engineering Research Center