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Nesting a nearshore wave model (SWAN) into an ocean wave model (WAM) with application to the southern North Sea
Luo, W.; Flather, R. (1997). Nesting a nearshore wave model (SWAN) into an ocean wave model (WAM) with application to the southern North Sea, in: Acinas, J.R. et al. Computer modelling of seas and coastal regions III: Coastal 97. pp. 253-264
In: Acinas, J.R.; Brebbia, C.A. (Ed.) (1997). Computer modelling of seas and coastal regions III: Coastal 97. Computational Mechanics Publications: Southampton. ISBN 9781853124990. 442 pp., meer
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Documenttype: Congresbijdrage
Trefwoord
    Marien/Kust
Auteurs  Top 
  • Luo, W.
  • Flather, R.
Abstract
    This paper presents a numerical scheme to nest a nearshore wave model (SWAN) in an ocean wave model (WAM). It allows users to run the WAM model on a coarse grid (deep or intermediate water depth) and to nm the SWAN model on a nested fine grid (shallow water) to achieve computational efficiency. The system was used to hindcast waves in February 1993 along the Belgian and Dutch coasts. Model results from SWAN and WAM are intercompared and are also compared with buoy measurements. Good agreement was found between WAM, SWAN and observations. In addition, a numerical investigation of depth refraction of waves was made for a uniform 1:1100 sloping coast. A wave directional resolution of the order of 15 degrees was found to be sufficient for SWAN to reproduce the wave refraction given by Snell's law while for WAM a directional resolution of 5 degrees was required to achieve the same accuracy.
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