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UGM 2000
Company Confidential Copyright 2000 Fluent Inc. All rights reserved.
1
CFD Analysis of Mixing
Applications for the
Process Industry
Analysis of Batch and
Continuous Stirred Tanks
UGM 2000
Company Confidential Copyright 2000 Fluent Inc. All rights reserved.
2
Agenda
• 1:30 - 1:40 Welcome
• 1:40 - 2:30 Overview of mixing in the CPI
w What is MixSim?
w Your MixSim Workflow
• 2:30 - 2:45 MixSim Demo
• 2:45 - 3:00 Break
• 3:00 - 3:15 CFD of Stirred Tanks
w Modeling Impellers
w Mixing Data Analysis and Visualization
• 3:15 - 4:00 Case Studies
• 4:30 - 4:45 Using MixSim with Gambit and Fluent 5
• 4:45 - 5:00 Discussion and Closing
UGM 2000
Company Confidential Copyright 2000 Fluent Inc. All rights reserved.
3
What is Mixing to the CPI?
• Mixing in agitated vessels is part of the infrastructure
of the chemical, petrochemical and biochemical
industries
• Mixing is done in batch, semi-batch or continuous
(CSTR) systems
• Need to determine under- or over-mixing of processes
w Poor mixing leads to waste
• Proper mixing is needed for chemical reaction
w Fast reactions (rates, selectivity and production) are
controlled by the rate of mixing
Copyright 2000 Fluent Inc. All rights reserved.
4
Characteristics of Mixing
• The general aspect of mixing is that it involves the
hydrodynamics of single or multiple phases and
requires a degree of fluid motion necessary for the
application
• CFD can be used to solve mixing application problems
in the process industry and can be used to determine
the fluid velocity, flow and power required to in a new
or existing process vessels
Copyright 2000 Fluent Inc. All rights reserved.
5
Processes involving mixing
• Mixing processes involve the blending miscible liquids,
chemical reaction, crystallization, dispersion,
dissolving, extraction, gas dispersion, heat transfer,
solids suspension
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