Event Information

Fluid Dynamics Reviews Seminar: Luc Deike "Air Entrainment by Breaking Waves" Thursday, February 1, 2018 3:00 p.m. 2164 Martin Hall, DeWALT Seminar Room For More Information: Johan Larsson 301-405-5273 jola@umd.edu www.enme.umd.edu/events/fluid-dynamics-review-seminars FLUID DYNAMICS REVIEWS SEMINAR SERIES Speaker: Luc Deike Assistant Professor Department of Mechanical & Aerospace Engineering Princeton University AIR ENTRAINMENT BY BREAKING WAVES February 1, 2018 | 3:00 PM | DeWalt Seminar Room, 2164 Martin Hall Abstract: Breaking waves at the water surface is a striking example of turbulent mixing across a fluid interface. The impact of the jet generates turbulence, entrains air into the water and ejects droplets into the air. A fundamental understanding of the general multi-scale properties of the resulting multiphase turbulent flow is necessary to develop more accurate gas transfer or spray generation parameterizations. In this talk, I will discuss a model for air entrainment by breaking waves in the ocean, based on laboratory experiments and direct numerical simulations at the wave and bubble scale, and then up-scaled to the ocean using measurements of the wave and wave breaking statistics. This approach leads to semi-empirical formulas relating wind and wave variable, such as wind speed and significant wave height, to air entrainment by breaking. I will discuss implications for air-sea exchanges of gases and marine aerosols, key to the climate system.   PDF FLYER More info at: www.enme.umd.edu/events/fluid-dynamics-review-seminars