A Direct 3D Numerical Simulation Code for Extrusion and Mixing Processes
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R. Valette
Abstract
This work focuses on the development of a general finite element code devoted to the three-dimensional direct simulation of mixing processes of complex fluids. The code, developed from the CimLib© Library, is based on a domain immersion method coupled with a “level-set” approach to represent the rigid moving boundaries, such as screws and rotors, as well as free surfaces. These techniques, combined with the use of automatized parallel computing, allow calculating the time-dependent flow of generalized Newtonian fluids in large and complex processes, involving moving free surfaces which are treated by a level-set/Hamilton-Jacobi method. Three examples of flow case studies are presented in this paper: the flow within the mixing section of a twinscrew extruder, the flow in an internal mixer and the flow in a batch mixer.
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© 2009, Carl Hanser Verlag, Munich
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Modeling the Temperature Development of Wall-slipping Polymers in Single-screw Channels
- A Novel Dilatometer for PVT Measurements of Polymers at High Cooling – and Shear Rates
- Analysis of Heat Transfer in PVC Profiles during the Extrusion Calibration/Cooling Step
- Study on the Bleeding Mechanism of Slip Agents in a Polypropylene Film using Molecular Dynamics
- A Direct 3D Numerical Simulation Code for Extrusion and Mixing Processes
- The Resarch for Asphalt Modified with Phosphorus Trichloride/SBS
- The Effect of Bead Vacuum on Slot Die Coating
- Predicting the Yield Stress of Polymer Glasses Directly from Processing Conditions: Application to Miscible Systems
- Numerical Simulation of a Thermoviscoelastic Frictional Problem with Application to the Hot-Embossing Process for Manufacturing of Microcomponents
- A Design to Study Flow Induced Crystallization in a Multipass Rheometer
- Modeling of Melt Conveying in a Novel Screw-Nested Extruder
- Rheological and Thermal Properties of a Model System for PIM
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Modeling the Temperature Development of Wall-slipping Polymers in Single-screw Channels
- A Novel Dilatometer for PVT Measurements of Polymers at High Cooling – and Shear Rates
- Analysis of Heat Transfer in PVC Profiles during the Extrusion Calibration/Cooling Step
- Study on the Bleeding Mechanism of Slip Agents in a Polypropylene Film using Molecular Dynamics
- A Direct 3D Numerical Simulation Code for Extrusion and Mixing Processes
- The Resarch for Asphalt Modified with Phosphorus Trichloride/SBS
- The Effect of Bead Vacuum on Slot Die Coating
- Predicting the Yield Stress of Polymer Glasses Directly from Processing Conditions: Application to Miscible Systems
- Numerical Simulation of a Thermoviscoelastic Frictional Problem with Application to the Hot-Embossing Process for Manufacturing of Microcomponents
- A Design to Study Flow Induced Crystallization in a Multipass Rheometer
- Modeling of Melt Conveying in a Novel Screw-Nested Extruder
- Rheological and Thermal Properties of a Model System for PIM
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts