Professor Rhodri Williams
Telephone: (01792) 295673
Room: Academic Office - A_024
Ground Floor
Engineering Central
Bay Campus

Specialist Subjects:

Non-Newtonian Fluid Mechanics
Process Engineering

President, British Society of Rheology (BSR), 2013-2015

Leads an EPSRC Portfolio Partnership in Complex Fluids and Complex Flows

Received British Society of Rheology’s Annual Award (1997) and a Royal Society Brian Mercer Award (in 2007) for rheometrical work, conducted under an EPSRC Advanced Fellowship, 1990-95: 95-98

Work has also been supported by NSF (USA), NATO and industry

Consistently received EPSRC’s highest assessments


  1. & Fourier Transform Controlled Stress Parallel Superposition (FT-CSPS): Validation and application in processing printable functional materials. Physics of Fluids 30(7), 077105
  2. & The effect of tyramine infusion and exercise on blood flow, coagulation and clot microstructure in healthy individuals. Thrombosis Research 170, 32-37.
  3. & Linear rheology as a potential monitoring tool for sputum in patients with Chronic Obstructive Pulmonary Disease (COPD). Biorheology, 1-14.
  4. & Control of collagen gel mechanical properties through manipulation of gelation conditions near the sol–gel transition. Soft Matter 14(4), 574-580.
  5. & The application of large amplitude oscillatory stress in a study of fully formed fibrin clots. Physics of Fluids 29(12), 121606

See more...


  • EG-211 Fluid Flow

    This module aims to extend the previous Fluid Mechanics (EG-160) module, to introduce the flow of fluids around particles, through porous media, pipes and devices (with special reference to the design and operation of differential head flowmeters) to provide a balance between theory and practical aspects of equipment used in chemical engineering, such as mixing impellers (with special reference to the Rushton-turbine type mixer) and packed beds (spherical particles). The module also addresses elements of non-Newtonian fluid flow in terms of the Power-Law Model and the Bingham-Plastic Model (for yield stress materials) and considers the flow of these materials in pipes.

  • EG-M01 Complex Fluids and Rheology

    This module considers the rheology of complex fluids. Course content provides an introduction to rheology from basic classifications of non-Newtonian materials to how the material properties affect processing operations. Consideration is given to the influence of product rheology and the manufacturing process, quality control and how this influences performance and end-user perception. Rheological methods for the characterisation of non-Newtonian materials are reviewed and means by which the results of such tests can be used to describe and predict advanced aspects of transport processes involving non-Newtonian fluids are considered. Materials of interest range from simple inelastic time-independent fluids to more complex viscoelastic systems. Measurement techniques considered range from simple shear viscometers to advanced rheometrical techniques for the characterisation of evolving systems (those which are changing with time due to chemical or physical transformation) and further techniques for the measurement of the extensional viscosity of mobile elastic fluids are reviewed.

  • EGNM02 Soft Nanotechnology

    This module introduces fundamental concepts in soft condensed matter physics/chemistry, and looks at the use of this knowledge in a wide range of 'soft matter'-based applications, including organic electronics, micro/nano-fluidics and molecular motors. A strong emphasis of the course is the fundamental physical processes that control the structure/behaviour of macromolecules.


  • Untitled (current)

    Student name:
    Other supervisor: Dr Daniel Curtis
  • Challenges in optical micro-rheometry for blood clot detection (current)

    Student name:
    Other supervisor: Prof Owen Guy
    Other supervisor: Prof Kenith Meissner
    Other supervisor: Dr Daniel Curtis
  • ‘Detection of Exhaust Particulate Induced Blood Clotting Anomalies using Rheometric Techniques’ (current)

    Student name:
    Other supervisor: Dr Daniel Curtis
  • Extensional flows and surface flow instabilities in printing: towards improved printed electronics (awarded 2019)

    Student name:
    Other supervisor: Prof Davide Deganello
  • Untitled (awarded )

    Student name:
  • Untitled (awarded )

    Student name: