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SUMMARY:Application of Smoothed Particle Hydrodynamics to simulate multi f
 luid flows with large density differences and application to mixing of pai
 nts - Dr Mahesh Prakash
DTSTART:20071001T133000Z
DTEND:20071001T140000Z
UID:TALK8043@talks.cam.ac.uk
CONTACT:Vanessa Blake
DESCRIPTION:Liquid mixing and blending is an important operation before pa
 ckaging a many fluid product. The blending or mixing process should be che
 ap and efficient and at the same time result in high product quality in te
 rms of consistency. In order to achieve this goal experimentally one needs
  to perform many trials involving changes in the motion and geometric dime
 nsions of the packaging container as well as product ratios of the fluid t
 hat is being blended together. Simulation can be used as an efficient tool
  to reduce the number of such experimental trials and/or optimise the syst
 em once a reasonable solution is obtained from the experimental trials.\n 
 \nThere are three principle issues that arise while modelling such systems
  which can lead to difficulties for traditional grid-based CFD methods:\n 
 \n# Tracking of the complex interface between the two phases as well as th
 e free surface behaviour\,\n# Dealing with complex motions of the packagin
 g equipment\n# Dealing with large density differences between the fluids i
 n consideration and\n# Tracking of convective movement of different fluid 
 components.\n \nIn order to overcome these issues the mesh-free Smoothed P
 article Hydrodynamics (SPH) method is explored as an alternative tool for 
 modelling such systems. In this paper we develop a robust methodology to d
 eal with fluids having a density ratio of up to 1:1000. We then demonstrat
 e its application to the mixing of a viscous liquid in a container moving 
 in a complex circular path with varying liquid levels. The simulations pre
 sented in this paper are performed in 2D. Extension to 3D and comparison w
 ith experimental results will be presented in a subsequent study. \n 
LOCATION:Board Room\, Department of Chemical Engineering
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