Colloquium- “Interface dynamics in ideal and realistic fluids” with Dr. Snezhana I. Abarzhi
Colloquium
February 28, 2024
3:00 PM - 4:00 PM
Location
SES 238
Calendar
Download iCal FileAbstract: Interface and mixing and their non-equilibrium kinetics and dynamics couple micro to macro scales, and are ubiquitous to occur in fluids, plasmas and materials. Stellar evolution, plasma fusion, reactive fluids, microfluidics, purification of water, and nanofabrication are a few examples of many processes to which dynamics of interfaces is directly relevant. This talk presents the rigorous theory of the stability of the interface – a phase boundary broadly defined. We directly link the structure of macroscopic flow fields to microscopic interfacial transport, quantify the contributions of macro and micro stabilization mechanisms to interface stability, and discover the fluid instabilities never previously discussed. In ideal and realistic fluids, the interface stability is set primarily by the interplay of the macroscopic inertial mechanism balancing the destabilizing acceleration, whereas microscopic thermodynamics create vortical fields in the bulk. By linking micro to macro scales, the interface is the place where balances are achieved.
References:
2023 The Kavli Institute for Theoretical Physics. https://doi.org/10.26081/K6998S
2022 Springer Nature Applied Sciences 4, 197. https://doi.org/10.1007/s42452-022-05000-4
2021 Physics of Plasmas 28, 042111. https://doi.org/10.1063/5.0040842
2020 Physics of Fluids 32, 082105. https://doi.org/10.1063/5.0013165
2019 Proc Natl Acad Sci USA 116 (37) 18218. https://doi.org/10.1073/pnas.1714500115
Some Recent Special Collections:
2023 The Kavli Institute for Theoretical Physics https://www.kitp.ucsb.edu/activities/interfaces-c23
2023 Springer Nature Applied Sciences https://link.springer.com/collections/djdjjahbjg
2022 Physics of Fluids https://pubs.aip.org/pof/collection/1536/Interfaces-and-Mixing-and-Beyond
2019 Proceeding of the National Academy of Sciences of the USA https://www.pnas.org/topic/515
Brief Biography
Snezhana Abarzhi is theoretical physicist and applied mathematician specializing in the dynamics of fluids, plasmas, materials, and their applications in nature and technology. Her key results are the mechanism of interface stabilization, the special self-similarity class in the interfacial mixing, and the fundamentals of Rayleigh-Taylor instabilities. Her key contributions to the community are the program ‘Turbulent Mixing and Beyond’ and the editorial work. Her achievements are recognized nationally and internationally (by, e.g., National Science Foundation and National Academy of Sciences in the USA, Japan Society for Promotion of Science in Japan, Alexander von Humboldt Foundation in Germany). She is Fellow of the American Physical Society, elected for ‘for deep and abiding work on the Rayleigh-Taylor and related instabilities, and for sustained leadership in that community’. She serves the Committee on Scientific Publications of the American Physical Society.
Snezhana I. Abarzhi is a Guest Professor at California Institute of Technology and a Professor (Distinguished, Level E) and Chair of Applied Mathematics at the University of Western Australia. Before that she worked at Carnegie Mellon University, the University of Chicago, Stanford University, and SUNY Stony Brook in the USA, and at the Osaka University in Japan, and the University of Bayreuth in Germany. She got her PhD at the Landau Institute for Theoretical Physics of the Russian Academy of Sciences.
References
https://en.wikipedia.org/wiki/Snezhana_Abarzhi
http://tmbw.org/tmbconferences/
https://www.pnas.org/topic/515
Date posted
Feb 15, 2024
Date updated
Feb 26, 2024