COMPARISON OF TIME-DEPENDENT EXTENDED MILD-SLOPE EQUATIONS FOR RANDOM WAVES

摘要

We compare the time-dependent extended mild-slope equations for random wavesrndeveloped by Suh et al. (1997) and Lee et al. (2001) by the analytical method and numericalrntests. In view of linear dispersion, Suh et al.’s model is more accurate than Lee et al.’s modelrnat relative water depth shallower than 0.247π and the reverse is true at water depth deeperrnthan 0.247π . In view of linear dispersion, the peak frequency and weight-averagernfrequency are selected as a carrier frequency for Suh et al.’s model and Lee et al.’s model,rnrespectively. In view of shoaling, Lee et al.’s model predicts accurately the characteristics ofrnrandom waves, whereas Suh et al.’s model fails.