We study interdisciplinary fluid mechanics problems with broad applications to the ocean and environment. We use laboratory experiments, mathematical modelling, and field data analysis as our primary tools. 

The following are some examples of our research:

Beyond the tracer limit: We often approximate small particles in fluid flows ( e.g., sediment, ice crystals, plankton, microplastics in the ocean) as tracers which follow fluid streamlines. However, finite-sized particle are not necessarily perfect tracers. Particle dynamics can deviate from that of a tracer due to their relative density, shape, size, or active behavior. Even small deviations, when integrated over time, can bias particle transport, e.g., through preferential sampling of the fluid flow. We research how and when these non-tracer properties are important in environmental settings.

Ocean surface waves: We study how ocean waves affect transport and dispersal of material. For example, we explore how waves can in some cases enhance the dispersal and settlement of inertial particles under waves, and how waves can induce a preferential orientation in non-spherical particles, and the implications this may have on a variety of systems. We are also interested in renewable wave energy, and the design of small wave energy conversions systems optimized for low power applications.

Plastic fate and transport in the ocean: Only a fraction of the predicted plastic that enters the ocean is expected to be found in the open ocean subtropical gyres (or "garbage patches"). Our research focuses on trying to understand and predict where the rest of the plastic goes. In particular, we want to describe the physical processes that control how much ends up on our beaches, at what rate it settles onto the ocean floor, and how fast it degrades. The research outcomes of this work will enhance our understanding of how plastic enters and leaves the ocean in order to better manage and mitigate risk.

Swimming in turbulence: Zooplankton, such as the larvae of benthic invertebrates, exist at intermediate scales relative to their turbulent environment. As a consequence, they have adapted complex and variable swimming behaviors to navigate in these conditions. Using experimental and numerical experiments, we study how their unsteady behavior in unsteady flows affects their transport and dispersal. Our findings will inform bio-inspired-designs of navigational strategies in turbulent flows.