Manipulating structured materials: paper making and mud swimming

Condensed Matter lunchtime seminar

Manipulating structured materials: paper making and mud swimming

  • Event time: 1:00pm until 2:00pm
  • Event date: 29th October 2018
  • Speaker: (Department of Applied Mathematics and Theoretical Physics, University of Cambridge)
  • Location: Room 2511,

Event details

A vast array of materials in the natural world, industry and everyday life are characterised by some form of internal structure, from granular or colloidal suspensions to sponges and foams. In this talk I will briefly consider the dynamics of flow and deformation in two contrasting settings involving such structured materials.  The first involves deformation of a fibrous suspensions, motivated by ‘dewatering’ of pulp suspensions in the paper-making industry. I will present a theoretical model and experimental results, and compare and discuss the solutions and implications. The second involves motion through the broad class of materials that are characterised by a plastic yield stress: I will explore classical models of viscous locomotion (cf. Taylor 1951) when the ambient fluid has a yield stress, both theoretically and with the aid of high-resolution numerical simulations. I will describe the corresponding flow structures and resulting swimming speeds and efficiencies for different basic swimming gaits.

About Condensed Matter lunchtime seminars

This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..

Find out more about Condensed Matter lunchtime seminars.