Second order waves before and after the floor work in the OEB in 2010 : Part A

This is a continuation of the work reported in TR-2011-16. In summer 2010, the south-west side trenches (0.4m x 0.3m) under and in front of the wave makers in the OEB have been permanently filled-up to provide a homogeneous bottom and uniform water depth all over the basin. This work is to understand the improvement of the wave quality after the floor work. Two sets of experimental data comprised of mono- and bi-chromatic waves before and after the floor work are used to identify the impact of the development work on the generation of unwanted second order free waves in the OEB. In this report results are compared between the measured energies at different probe locations and also second order wave components before and after the floor work in the OEB. Comparisons are shown in terms of measured wave energies, primary waves, bounded waves and unwanted second order free waves elevations. In this report 0.4m, 0.5m and 0.6m of water depth is considered. In most of the cases it is observed from the results that the shallower the wave the better the wave quality after the floor work.NRC publication: Ye