Optimisation of a microfluidic converging channel for extensional measurements

Konstantinos Zografos, M.A. Alves, Monica Oliveira

Research output: Contribution to conferencePoster

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Strong extensional flows are important for many scientific and industrial applications, especially for non-Newtonian fluids where measurements of extensional properties, such as extensional viscosity, are important. Converging geometries are known for their ability to stretch the fluid in a strong extensional flow along the centreline [1]. At the macroscale, converging channels used as extensional rheometers are usually axisymmetric and operate only with highly viscous fluids to reduce inertial effects. Microfluidic flows are characterised by high deformation rates under small Reynolds numbers (Re),offering a promising platform for investigating fluids described by complex rheological behaviour.
Original languageEnglish
Number of pages2
Publication statusPublished - 14 Apr 2015
Event10th Annual European Rheology Conference, AERC 2015 - Nantes, United Kingdom
Duration: 14 Apr 201517 Apr 2015


Conference10th Annual European Rheology Conference, AERC 2015
CountryUnited Kingdom


  • microfluidics
  • converging flow
  • extensional measurements
  • fluid dyamics

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