The Colorful Fluid Mixing Gallery
This image shows experimental data for the vorticity distribution in a stirred vessel. The data was
taken using a digital particle image velocimetry system. It shows one snapshot in time. The flow
field is unstable and exhibits long time scale variations.
This image shows the trailing vortices behind the blades of a Rushton style impeller.
This image shows the velocity magnitude in a plane below an impeller. The fluid is viscous and the
Reynolds number is approximately 10. The calculations were performed using a sliding mesh
model. This image was created in cooperation with Dr. Richard D. LaRoche at SGI/Cray. The
simulation was performed using Fluent from Fluent, Inc., and the image was created using
EnSight from CEI, Inc.
This image shows streaklines in a stirred vessel. The color denotes the time, with dark blue being
time zero and red being near the end of the simulation.
Solids suspension, the mixing of a solid into a liquid, is a common occurrence in the process
industries. Examples are crystallization, and leaching of minerals in mining applications. This
image shows the solids distribution in a stirred tank, with a single impeller drawing 3.5 kW on the
left, and with three impellers drawing a total of 2.3 kW on the right. The solids are more uniformly
suspended with the three impeller system, despite the lower power draw. The simulations were
performed using proprietary Ghost! software.
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Last Updated April 10, 1998 by André Bakker
© André Bakker (1998)