Rheology - introduction to the course [presented by Dr Bart Hallmark, University of Cambridge]

This short video starts by describing what rheology is, and shows examples of common materials with interesting rheoloical behaviour. It then goes on to give the course outline and key learning objectives. This course is a Master's level course in rheology, given at the University of Cambridge department of Chemical Engineering & Biotechnology, and is split into four sections. Section A covers revision of fundamentals, including Newtonian fluid behaviour. It also covers rheometry - how to measure the material properties of fluids, and extensional behaviour. Section B covers the phenomenon of viscoelasticity. It derives the simple Maxwell model and discusses its strengths and shortcomings. The model is developed to overcome each of the shortcomings and this section culminates in the introduction of convected viscoelastic constitutive equations. Section C examines viscoplastic materials. It examines how to do calculations with fluids that have a yield stress, including pressure drop calculations. It also looks at perfect plasticity and extrusion. Section D discusses the rheology of multiphase materials and starts with the property of thixotropy. The Cross model is derived as a mathematical description of thixotropy before the rheology of particle suspensions and two-phase emulsions is outlined.