Webinar

Abstract: Fluid flow through complex structures is a fundamental challenge in various scientific and engineering applications, spanning from macroscale industrial processing to microscale transport phenomena. In this talk, I will present insights from my research on three interconnected themes: fluidization of yield-stress materials, scaling laws for optimal transport in tree-like branching networks, and nanoscale flow in deformable channels.

First, I will discuss the fluidization of yield-stress fluids under vibrational forcing, a crucial aspect in industries such as food processing and concrete manufacturing. Using experimental investigations on materials like molten chocolate and Carbopol, I explore how vertical oscillations influence yielding, viscoelastic behavior, and spreading dynamics. These findings provide a novel perspective on yield transitions and nonlinear viscoelasticity in complex fluids.

Next, I will delve into scaling laws governing optimized power-law fluid flow in self-similar tree-like branching networks. By considering constraints on volume and surface area, I derive optimal bifurcation ratios and flow conductance conditions that extend Hess–Murray’s law to non-Newtonian fluids. These results offer valuable principles for the design of efficient transport systems in biological and engineering applications, including vascular networks and microfluidic devices.

Finally, I will explore fluid transport at the nanoscale, where deformable channel walls significantly impact flow behavior. Understanding these effects is critical for applications in nanofluidics, membrane filtration, and energy-efficient transport systems.

Join Zoom Meeting:

https://us02web.zoom.us/j/85215669321?pwd=hYay2Ls9yqlWhdexmGoUBW3BI5nRp0.1

Meeting ID: 852 1566 9321

Passcode: 363048