A verification procedure for wave propagation models

C. J. Martin, Robert Anthony Dalrymple, M. C. Miller

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The importance of verifying the calibrating numerical models, before using them to predict design criteria, is well known. A verification scheme for wave refraction models has recently been developed. Two of the latest wave refraction models have been acquired and tested The first is based on a parabolic approximation method, using a finite difference technique, which includes the effects of combined refraction/diffraction, wavecurrent interaction, partial and full wave breaking and non-linear effects The second is a simpler model based on the wave action equations, and includes the effects of wave refraction, shoaling, partial breaking and bottom friction. The first model is most useful over coastal areas (up to 200 km2) but is relatively expensive to run compared with the wave action model. The second model, although less rigorous in its solution of the physical equations, is more useful over much larger areas (up to 2000 km2). The method has been carefully designed to test all aspects of model performance. This includes: (1) Verification against laboratory data (where traditional ray techniques break down) (2) Sensitivity tests against hypothetical bathymetnes for several input/boundary conditions. (3) Verification against two field data sets, both including the measurement of directional spectra This chapter outlines the test procedure and presents the results using the two models described above. It also highlights areas where development work on the models was necessary, and where future work is required. Development of the modelling techniques is continuing.

Original languageEnglish (US)
Title of host publicationModelling the Offshore Environment
Subtitle of host publicationProceedings of an International Conference 1987
PublisherSociety of Underwater Technology (SUT)
Pages181-202
Number of pages22
ISBN (Electronic)0860108627, 9780860108627
StatePublished - Jan 1 1987
EventInternational Conference on Modelling the Offshore Environment, SUT 1987 - London, United Kingdom
Duration: Apr 1 1987Apr 2 1987

Publication series

NameModelling the Offshore Environment: Proceedings of an International Conference 1987

Other

OtherInternational Conference on Modelling the Offshore Environment, SUT 1987
CountryUnited Kingdom
CityLondon
Period4/1/874/2/87

ASJC Scopus subject areas

  • Oceanography
  • Ocean Engineering
  • Environmental Engineering

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