Chemical Engineering


Multiphase Systems


Research in the Fluids and Particle Systems Group focuses on the physical and physico-chemical understanding and chemical engineering of many complex two- and three-phase systems spanning across different length-scale (micro to macro) and flow regimes. Our vision is to exploit the Group’s strong science-based, fundamental research approach to develop multidisciplinary applications in strategic areas related to CO2 Management, Sustainable Energy, Scalable Manufacturing and Advanced Materials. This is underpinned by our distinctive breadth of experimental (laboratory and pilot-scale) and advanced modelling techniques, coupled with our unique flow imaging facilities (X-rays, muon and micro PIV).


Our broad expertise ranges from particle technology (crystallization & fluidization) and rheology, the experimental study and computational fluid dynamics (CFD) modelling of two and three-phase flows (including compressible flows), to safety and loss prevention modelling and fracture mechanics. For applications, particular emphasis is put on green chemical manufacturing (advanced materials and pharmaceuticals), energy storage and CO2 conversion, pipeline transportation and flow assurance, nuclear applications (bespoke cement powders for waste disposal and nuclear fuel reprocessing, molten salts), and energy from wastes, biofuels and clean coal gasification.

Collaborations and Awards

The group collaborates extensively with industry and other research centres at UCL, nationally and internationally. Work undertaken in the Group has attracted significant funding from the Research Councils and industry and prestigious awards such as the IChemE Frank Lee Medal in Safety and Loss Prevention and the Royal Academy of Engineering Global Research Award.


  • Structuring fluidized beds using a nature-inspired engineering approach
  • Point-of-care microfluidic device for quantification of chemotherapeutic drugs in small body fluid samples by highly selective nanoparticle extraction and liquid crystal detection
  • Liquid crystal - nanoparticle interaction
  • Ligand-shell mediated nanoparticle-stimuli interactions
  • Actuation of the transition from separated to dispersed liquid-liquid flows
  • Development of advanced laser based flow diagnostics
  • Flow pattern development with non-Newtonian fluids in microfluidics channels
  • Dispersed two-phase flows.
  • Drag reduction in oil-water flows using polymeric additives.
  • Intensification of Europium extraction in small channels using ionic liquids.
  • Intensified extractions for spent nuclear fuel reprocessing
  • Integrated experimental and computational fluid dynamic studies for advanced process development of complex Oral Health products
  • Mathematical modelling of gold nanoparticle synthesis processes
  • Mathematical modelling and numerical simulation of axial expansion and lateral dispersion of nearly-monodisperse fluidized suspensions
  • Clean energy from waste gasification
  • Study of the Process Conditions on the fluidization Behaviour of industrial Cohesive Particles
  • Study of the defluidization behaviour of industrial reactive particles
  • Cooling Crystallisation under Flow and Ultrasound
  • Hydrodynamics and Crystallisation Studies in Multiphase Contactors
  • Sonocrystallisation in Continuous Flow Microchannel Contactors