Please join us for a technical seminar with Dr. Andrew Szeri on January 18, 2018 from 1:00-2:00pm.
Speaker: Dr. Andrew Szeri, Professor, Mechanical Engineering
Topic Area: Current Research Areas
Date: Thursday, January 18, 2018
Time: 1:00 – 2:00 pm
Location: KAIS 2020
RSVP: Please RSVP to https://survey.ubc.ca/s/szeri/
Please note that this is a technical seminar that will be focused solely on Dr. Szeri’s research.
A specialist in fluid dynamics, nonlinear dynamics, and computational neuroscience, Professor Andrew Szeri joined the University of British Columbia as Provost and Vice-President Academic in July 2017. He is appointed in the Department of Mechanical Engineering.
Dr. Szeri’s areas of research interest include solute transport (air-sea exchange of heat and mass, respiratory mechanics and gas exchange in alveoli, delivery of anti-HIV microbicides, and insulin delivery and control systems for an artificial pancreas), medical acoustics (destruction of kidney stones by shock waves, clot dissolution by high-intensity focused ultrasound, and diagnostic ultrasound contrast agents), and computational neuroscience (synchronization, sleep dynamics, optogenetics, and seizure dynamics and control). These research topics build on earlier work in nonlinear hydrodynamic stability, complex fluids, charged particle dynamics, and cavitation physics.
Prior to joining UBC, Dr. Szeri was a professor in the Department of Mechanical Engineering and the Vice Provost for Strategic Academic and Facilities Planning at UC Berkeley, teaching in the areas of fluid mechanics and nonlinear dynamics. He has won several research awards, four teaching awards, and a recent award for excellence in student mentoring. He received his M.Sc. and Ph.D. in Theoretical and Applied Mechanics from Cornell University in 1987 and 1988.
Read the abstract of his seminar below:
Exchange of mass or heat across a turbulent liquid-gas interface is a problem of critical interest, especially in air-sea transfer of natural and anthropogenic gases involved in the study of climate. The goal in this research area is to determine the gas flux from air to sea or vice versa. For sparingly soluble non- reactive gases, this is controlled by liquid phase turbulent velocity fluctuations that act on the thin species concentration boundary layer on the liquid side of the interface. If the fluctuations in surface-normal velocity w’ and gas concentration c’ are known, then it is possible to determine the turbulent contribution to the gas flux. However, there is no suitable fundamental direct approach in the general case where neither w’ nor c’ can be easily measured. A new approach is presented to deduce key aspects about the near-surface turbulent motions from measurements that can be taken by an infrared (IR) camera. An equation is derived with inputs being the surface temperature and heat flux, and a solution method developed for the surface-normal strain experienced over time by boundary layers at the interface. Because the thermal and concentration boundary layers experience the same near-surface fluid motions, the solution for the surface- normal strain determines the gas flux or gas transfer velocity. Examples illustrate the approach. The robustness of the approach to measurement noise is also considered.