Applied Physics and Applied Mechanics Colloquia

Themes With Complex Fluids: Distinct Flow Problems Involving Rough Surfaces, Self-Similarity, and Speech

Howard Stone (Princeton University)

Friday, Mar 1, 2024
2:00 pm to 3:00 pm | Maxwell Dworkin, G115 | Remote option

In this talk I sketch some recent themes* from my research group, starting with a brief survey of some of the fluid mechanics problems that we have been investigating in recent years. Then, I discuss in more depth three problems. First, I describe the motion of particles near rough boundaries, where three dimensional helical trajectories are possible.  (ii) Second, I consider thin-film drainage flows near an edge where the dynamics involves three independent variables. Nevertheless, a similarity solution is possible to achieve a description in terms of an ordinary differential equation, whose solution is shown to be in excellent agreement with experimental measurements. (iii) Finally, the recent COVID-19 pandemic highlighted asymptotic air-borne transmission of a virus during ordinary activities, such as conversations, which motivated us to tackle the interrelations of speech, linguistics, and fluid dynamics.


*The research described was performed by many people in my research group, as well as some external collaborations. 

Speaker Bio

Professor Howard Stone received the B.S. degree in Chemical Engineering from UC Davis in 1982 and the PhD in Chemical Engineering from Caltech in 1988. After a postdoctoral fellowship at the University of Cambridge, in 1989 Howard joined the faculty of the School of Engineering and Applied Sciences at Harvard University, where he eventually became the Vicky Joseph Professor of Engineering and Applied Mathematics. In July 2009 Howard moved to Princeton University where he is Donald R. Dixon ’69 and Elizabeth W. Dixon Professor in Mechanical and Aerospace Engineering.

Howard’s research interests are in fluid dynamics, especially as they arise in problems at the interface of engineering, biology, chemistry, and physics. He is a Fellow of the American Physical Society (APS) and is past Chair of the Division of Fluid Dynamics of the APS. He was the first recipient of the G.K. Batchelor Prize in Fluid Dynamics (2008) and received the Fluid Dynamics Prize of the APS (2016). He has been elected to the National Academy of Engineering (2009), the American Academy of Arts and Sciences (2011), the National Academy of Sciences (2014), the Royal Society (United Kingdom) as a Foreign Member (2022), and the American Philosophical Society (2022).


AP/MSME Colloquium Series


Douglas Woodhouse