Abstract
Effect of Reynolds number on model experiment of wave transformation was examined for permeable breakwaters with a precast concrete armour unit in shallow water region.
Transmission coefficient, KT increases by the increase in Reynolds number, Re and experiment magnification, N at logarithmic.
Then, linearized friction coefficient, f is decreased with the increase in Reynolds number, and transmission coefficient increases.
As a result of examining transmission coefficient in the field using the equation of the authors which is possible to calculation of transmission coefficient. Then, transmission coefficient becomes almost constant at Re>50×104 and it is about 50%.
