SPH simulation for short fibre recycling using water jet alignment

Samantha J Huntley, Thomas C S Rendall*, Marco L Longana, Thomas Pozegic, Kevin D Potter, Ian Hamerton

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review


This work presents a computational model for a discontinuous fibre composite manufacturing process. The alignment mechanism of this novel process, called the High Performance Discontinuous Fibre (HiPerDiF) method, involves highly coupled fluid-structure interactions. Fibres with a length on the order of a few millimetres are placed in a water suspension, sprayed between two parallel plates and deposited on a moving belt to make an aligned discontinuous fibre tape. This technology can be used as part of a composites recycling process to remanufacture reclaimed fibres into valuable recycled composite feedstock by ensuring a high level of alignment. This work aims to model the alignment mechanism using smoothed particle hydrodynamics in order to inform the design of the industrial machine. The results reveal the influence of jet angle and fibre
length on the overall quality of fibre alignment.
Original languageEnglish
Number of pages15
JournalInternational Journal of Computational Fluid Dynamics
Early online date25 Feb 2021
Publication statusE-pub ahead of print - 25 Feb 2021


  • composites
  • SPH
  • recycling
  • short fibres
  • alignment

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