SBEACH: Numerical Model for Simulating Storm-Induced Beach Change. Report 5: Representation of Nonerodible (Hard) Bottoms.
Abstract
The SBEACH (Storm-induced BEAch CHange) numerical simulation model was developed at the U.S. Army Engineer Waterways Experiment Station to calculate beach and dune erosion under storm water levels and wave action. The work documented in this report was performed to allow SBEACH to account for nonerodible (hard) bottoms in computing dune and beach erosion. Sensitivity tests were used to evaluate the results of incorporating the HB factor into SBEACH. For qualitative reasonability of results, addition of the HB factor was found to perform well. Quantitative tests comparing a single available case of HB exposure in a large wave tank with several tests performed with a mid-scale physical model were also successful. Comparisons with the mid-scale tests also validated the monochromatic and random-wave transport calculations. For comparison with the mid-scale tests, a scaling criterion was derived; success in reproducing the physical model results with SBEACH is an indirect confirmation that the basic physical principles acting to produce storm-induced beach erosion are represented in the numerical model.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1998
- Accession Number
- ADA354783
Entities
People
- Magnus Larson
- Nicholas C. Kraus
Organizations
- Coastal Engineering Research Center