An experimental and CFD investigation into the mixing in a closed system stirred vessel

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


An investigation has been undertaken into the mixing mechanisms involved in a
closed tank stirred vessel utilising a wide paddle agitator, for fluids in the viscosity range of 1 to 5.5 mPa s. In particular, the effect of fill depth on the mixing time has been considered, as this has a direct impact on the usability of the mixing process equipment for scaled-down batch production. Experimental work has been undertaken and this has been used to develop a suitable computational fluid dynamics (CFD) model which implements the Multiple
Reference Frame (MRF) approach with the addition of a virtual tracer used to calculate mix time. A study into whether laminar or turbulent models are required and an appropriate method for the implementation of turbulence has been established. The results allow identification of the optimum ratio of fill depth to paddle height to be established. Additionally, the developed CFD model will allow for further investigation into the effects of other process parameters.
Original languageEnglish
Title of host publicationKES Transactions on Sustainable Design and Manufacturing
Subtitle of host publicationProceedings from SDM'2014 International Conference on Sustainable Design and Manufacturing Cardiff, Wales, UK 28-30 April 2014
EditorsR. Setchi, R.J. Howlett, M Naim, H. Seinz
Number of pages12
ISBN (Electronic) 978-0-9561516-9-8
Publication statusPublished - 2014
MoE publication typeA4 Article in a conference publication


  • computational fluid dynamics, process simulation
  • Mixing
  • mixing efficiency
  • Point analysis

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