The CFD study of fluid flow in the CSTR with respect to the use of different types of impellers like PBTD,PBTU,RUSHTON etc..... With the help of ANSYS Fluent
EPANDING THE CONTENT OF AN OUTLINE using notes.pptx
Cfd study of cstr for different impellers
1. PICE 2017
Hosted at Department of Chemical Engineering
AISSMS COE, Pune-1
26 March 2017
Justin K George ,Dr. Vivek Vitankar, Dr. Kanhaiya R Jethani
Department of Chemical Engineering
AISSMS COE, Pune-1
2. Contents
Introduction
Objective
PBTD Impeller Without Baffle
PBTD impeller With Baffle
Comparative Study of PBTD With & Without Baffle
PBTU Impeller
Rushton Turbine
Conclusions
References
3. Fluid flows are governed by partial differential equations
CFD is the art of replacing PDE systems by a set of algebraic
equations
CFD provides a qualitative (and quantitative) prediction of fluid
flows by
• mathematical modeling (partial differential equations)
• numerical methods ( discretization and solution techniques)
• software tools (solvers ,pre-and post processing utilities)
Introduction
4. Objective
• Detailed study of flow in
PBTD Impeller Vessel without baffle
PBTD impeller with baffle
Role of baffle in Mixing
PBTU Impeller Vessel
Rushton Turbine Vessel
with the help of CFD .
5. Parameters Dimensions
Tank diameter, T 0.5 m
Impeller diameter, D 0.17 m
Clearance, C 0.165 m
Height of liquid, H 0.5 m
Baffle width, Bw 0.05 m
Baffle thickness, BT 0.0045 m
Dimensions of the Vessel
Impeller Speed = 468.6 rpm
48. Conclusion
CFD helps to study the fluid flow inside the system.
MFR model is implemented to simulate the agitated impeller
involving rotating blades in CSTR
Baffles helps to convert the tangential velocity into radial &
axial velocity components.
The flow changes by changing the impeller in the same vessel
& with same speed.
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