L04. Flume measurements by Baldock (1998)

Baldock et al.(1998) carried out an experiment in which they measured the fraction of breaking waves in order to develop a surf breaking formulation. Vink (2001) made a Swan simulation of this experiment which was modified in this test bank.

This graph from Vink (2001) shows that Baldock's Qb performs better than the one by Battjes and Janssen (1978)

The computations are compared with measurements in plot plfL04.

2 runs are made:

L04a
default physics, coarse run
L04b
default physics, nested run from 40 m
L04c
BalDock breaking formulation
L04d
as L04c, nested run from 40 m
L04e
JONSWAP friction formulation
L04f
as L04e, nested run from 40 m
L04g
Baldock breaking formulation, triads on
L04h
as L04g, nested run from 40 m

References:

Baldock, T.E., Holmes, P., Bunker and S., Weert, P. van, (1998),
Cross-shore hydrodynamics within an unsaturated surf zone, Coastal Engineering, 34, p.173-196.
Smith, J. and Vincent, C.L., (1992),
Shoaling and decay of two wave trains on a beach, Journ. of Waterway, Port, Ocean and Coastal Eng., vol. 118, p. 517-533.
Vincent, C.L., Smith, J. and Davis. J., (1994)
Parameterization of wave breaking in models, Waves - physical and numerical modelling, Proc of int. symp., p. 753-761.
Vincent, C.L. and Smith, J., (2000)
Spectral model for depth-limited wave breaking, personal copy.
Vink, A.S. (2001)
Transformation of wave spectra across the surf zone, Delft University of Technology, MSc thesis

© 2012: Nico Booij