Paper Number
PL2 My Program
Session
Plenary Lectures
Title
Rheology magic
Presentation Date and Time
October 21, 2025 (Tuesday) 8:30
Track / Room
Plenary Lectures / Sweeney Ballroom E+F
Authors
- Beris, Antony N. (Univeristy of Delaware, Chemical and Biomolecular Engineering)
Author and Affiliation Lines
Antony N. Beris
Chemical and Biomolecular Engineering, Univeristy of Delaware, Newark, DE 19716
Speaker / Presenter
Beris, Antony N.
Keywords
theoretical methods; computational methods; bio-fluid dynamics; biorheology; colloids; emulsions; flow-induced instabilities; future of rheology; non-Newtonian fluids; particualte systems; polymer melts; polymer solutions; surfactants; suspensions
Text of Abstract
In a series of three stories referring to three different rheology investigations I will offer common elements and patterns as emerged from three different experiences with rheology studies that have persisted and are still on-going throughout my 40+ research career.
Starting with viscoplasticity and the analysis of the Bingham fluid flow around a falling sphere, I will outline its evolution to thixotropy with the development of one of the first structural models, leading more recently to the development of elastoviscoplastic and multiscale models with special application to blood rheology.
Second, with viscoelasticity, starting from the simulation and perturbation analysis of the flow between eccentric rotating cylinders, extended to the flow through undulating tubes, continued to the study of elastic instabilities to Taylor-Couette flow with the identification of three-dimensional critical instabilities, leading to the simulation of drag reduction in turbulent flows, I will outline most recent results obtained through the use of lubrication theory for flow through confined geometries.
The final tour starts with the modeling of the flow of polymeric liquid crystals, that led to the development of a systematic theory for modeling of material flows though non-equilibrium thermodynamics, eventually enabling complex flow applications such as the modeling of the flow of rod-like micelles, emulsions with most recently a significant extension involving the inclusion of microinertia effects.
The contributions of a significant number of collaborators consisting of undergraduate and graduate students, postdoctoral researchers and colleagues will be duly acknowledged.