PIANC E-Magazine - PIANC AIPCN welcome
PIANC E-Magazine - PIANC AIPCN welcome
PIANC E-Magazine - PIANC AIPCN welcome
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hf<br />
Fh<br />
Crown wall height in metres.<br />
Maximum horizontal force in N/m.<br />
The application range for the variables is shown<br />
in Figure 10.<br />
Fv<br />
Maximum up-lift force associated with<br />
the wave that has generated the maximum<br />
horizontal force in N/m.<br />
ρ Water density in kg/m 3 .<br />
g Gravity acceleration in m/s 2 .<br />
Figure 10. Application range of the equations<br />
Figure 11. Comparison between dimensionless forces estimated by the formulae<br />
and the forces observed in the laboratory tests. In red, 95 % bands of confidence.<br />
RMSE (1) associated with the square root fitting<br />
(Figure 11) is 0.16 for Fh (r 2 = 0.84) and 0.14 for<br />
Fv (r 2 = 0.86).<br />
Relative mean square errors for each of the nondimensionless<br />
formulae are given in Figure 12 below:<br />
Figure 12. Relative mean square error for each one of the formulae<br />
<strong>PIANC</strong> E-<strong>Magazine</strong> n° 144, November/novembre 2011 38