Visualization of viscoelastic drop deformation and breakup in simple shear flow
Huaping Li, PhD student in Chemical Engineering
Supervisor - Dr. UT Sundararaj
The deformation and breakup of Boger-fluid drops in Newtonian liquids under simple shear flow were investigated by direct visualization using a specially designed Couette apparatus which enables visualization from two different directions (i.e. to get a 3-D image). Four types of breakup modes were observed. Boger-fluid drops can break up in simple shear flows along the flow direction or the vorticity axis. The breakup mode was found to depend on both drop size and viscoelastic properties.
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