Euler-Lagrange CFD modelling of unconfined gas mixing in anaerobic digestion

Davide Dapelo, Federico Alberini, Jonathan Bridgeman

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)
272 Downloads (Pure)


A novel Euler-Lagrangian (EL) computational fluid dynamics (CFD) finite volume-based model to simulate the gas mixing of sludge for anaerobic digestion is developed and described. Fluid motion is driven by momentum transfer from bubbles to liquid. Model validation is undertaken by assessing the flow field in a labscale model with particle image velocimetry (PIV). Conclusions are drawn about the upscaling and applicability of the model to full-scale problems, and recommendations are given for optimum application.
Original languageEnglish
Pages (from-to)497-511
JournalWater Research
Early online date6 Sept 2015
Publication statusPublished - 15 Nov 2015


  • CFD
  • Euler–Lagrangian
  • Anaerobic digestion
  • Non-Newtonian fluid
  • Gas mixing
  • PIV


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