Marc Perlin

Active areas of research are in nonlinear water-wave dynamics, contact-line dynamics, drag-reduction technologies, and coastal engineering. Energy dissipation, vorticity dynamics in near-breaking and breaking waves are studied experimentally using PIV and other non-intrusive techniques. Drag-reduction technologies such as polymers are investigated. Wind effects on these mechanically generated waves are also studied. Contact-line dynamics in oscillatory flows are studied experimentally and numerically. Steep and breaking standing waves and their nonlinear dynamics have been investigated using Faraday waves. Long-wave, short-wave interactions are investigated as well as the viscous drift induced by short waves. Specifically parasitic capillary waves generated by steep gravity waves are studied. High-speed video in conjunction with a laser sheet provide spatial information. In the experimental investigations, temporal and spatial data are used to yield both frequency and directional (wavenumber) spectra. Within coastal engineering, present interests are in the numerical modeling of shorelines and structures, and the quantification of longshore and cross-shore sediment transport. Specifically, these areas include such topics as the relationship between directional wave spectra and its attendant sediment transport; and, a description of the beach profile for non-monotonic cross-shores.