VELOCITIES IN DOWNRUSH ON RUBBLE MOUND BREAKWATERS

A. Brandtzaeg, A. Torum, O.R. Ostby

Abstract


This paper is a sequence to two papers, (1) and (2), previously read at Coastal Engineering Conferences. They presented a mathematical model for estimating displacements, velocities and accelerations in a downrushmg wave on a rubble mound breakwater slope. Verification by photographic recording of displacements involved some uncertainties. In the present paper are reported measurements of velocities, which gave much more definite data. The correlation with velocities calculated from the model is shown to be good.

Keywords


downrush velocity; rubblemound breakwater; breakwater downrush

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