This is a continuation of the
Process Intensifier - Optimization with CFD: Part 1 paper.
Shear Rate Distribution
ACUSOLVE readily outputs the velocity gradient tensor from
which the scalar magnitude of shear rates is well defined in
continuum mechanics and can be determined, reported, and studied.
Hence, shear rates can be studied for shear sensitive fluid
rheologies directly and can be further extended for shear
rate sensitive calculations and correlations for subjects such
as droplet size distribution models which evaluate and
correlate droplet sizes with respect to surface tension, the amount
of shear deformation incurred, etc along with such subjects as
the Weber number.
What is interesting is that the graphical display of
this information is difficult since the difference in shear near
(or practically on) the impeller blades is about 4-6 orders
of magnitude in the bulk. Here is an example in
This sort of graphical illustrations doesn't really appear to be very
helpful, and it is very hard to see where these zones are. For this reason we
looked at Eddy Viscosity.
Continue with Eddy Viscosity
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