Controlling Slippage, Splashing and Viscous-Fingering
Event details
| Date | 27.03.2014 |
| Hour | 15:15 › 16:15 |
| Speaker |
Dr Peichun Amy Tsai, University of Twente, The Netherlands Bio: Dr Peichun Amy Tsai obtained her PhD degree in November 2007 from the University of Toronto in Canada. Subsequently, Dr. Tsai was a Postdoctoral Researcher working with Prof. Detlef Lohse, in the Physics of Fluids Group at the University of Twente in the Netherlands. She then moved to the US, working with Prof. Howard Stone as a Postdoctoral Research Associate, in the group of Complex Fluids in the Department of Mechanical Engineering at Princeton University. She recently joined the University of Twente as an Assistant Professor, in the group of Soft matter, Fluidics and Interfaces. Her recent research focuses on both micro-and-macro interfacial and fluid problems associated with environmental and energy applications. |
| Location | |
| Category | Conferences - Seminars |
Abstract : In this talk, I will demonstrate how to alter macroscopic flows via interfacial modifications at micro scales, highlighting associated energy applications. Three flow scenarios are scrutinized and presented, namely microfluidic flow, drop impact, and macroscopic fluid-fluid displacement. In microfluidic laminar flow, our pore-scale measurements reveal that the geometry of the liquid-gas interface strongly influences the hydrodynamic slippage, i.e., drag reduction, using hydrophobic micro-structures. In drop impact on a solid substrate, the impact outcomes can be tuned by varying the microstructures of the surface. In a large-scale flow configuration, a viscous-fingering in a Hele-Shaw cell—a convenient framework for modeling a homogeneous porous medium—can be controlled through a capillary effect. From these results, we learn that the interfacial conditions play an important role, thereby offering strategic controls of flow behaviors.
Practical information
- General public
- Free
Organizer
- iGM GE
Contact
- Géraldine Palaj