Investigation of Flow Rate and Viscous Dissipation in a Single Screw Pump-Extruder
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G. A. Campbell
Abstract
The focus of this investigation was to determine the effect of barrel rotation and screw rotation on the flow rate and viscous dissipation inside the screw pump-extruder. The screw pump-extruder was built to allow for barrel rotation and screw rotation independently. A Newtonian fluid, Polypropylene glycol, was chosen as the working fluid. The experimental results can be summarized by noting that the pumping capacity of the device was independent of which element was rotated at constant angular velocity and that barrel rotation generated higher temperature rise than screw rotation for the two screws evaluated. Also this analysis suggested that a large amount of viscous dissipation inside this extruder arises from the clearance flow. A new analytical model was proposed to evaluate the viscous dissipation for screw rotation. Calculations using this new mathematical model provided good agreement with the experimental data for both barrel and screw rotation.
Acknowledgments
We would like to thank Dow Chemical, Becton Dickinson, Eastman Chemical, XALOY and American Leiztritz, 3M, and American National Can for funding part of this research. This work was also supported in part by Center for Advanced Materials Processing at Clarkson University, a center of advanced technology supported by the New York State Science and Technology Foundation.
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© 2001 Walter de Gruyter GmbH, Berlin/Boston, Germany
Artikel in diesem Heft
- Contents
- Editorial
- Pioneer of Regenerated Cellulose and Reactive Processing Charles Frederick Cross
- Mixing and Screw Extrusion
- Characterization of Distributive Mixing in Polymer Processing Equipment using Renyi Entropies
- Investigation of Flow Rate and Viscous Dissipation in a Single Screw Pump-Extruder
- Direct Method for Deconvoluting Two Residence Time Distribution Curves
- Process Behavior of Special Mixing Elements in Twin-screw Extruders
- Experimental and Theoretical Study of Polymer Melting in a Co-rotating Twin Screw Extruder
- Experimental and Theoretical Study on the Performance of an Extruder for Cross-linkable PE
- Laminar Fluid Chaotic Mixing in Three-Dimensional Continuous Flow Domains
- Film
- Morphological Characterization of PE Blown Films by Atomic Force Microscopy
- Orientation and Mechanical Properties of Extrusion Cast PA 12 Films in Biaxial Stretching Process
- Injection Molding
- Simulation Opportunities by a Three-dimensional Calculation of Injection Moulding based on the Finite Element Method
- Flow Marks in Injection Molding of PP
- Injection Molding of Plastic Plates Combined with Boss Features on Superplastic Zn–22Al Sheet
- PPS News
- PPS News/Calendar of Future PPS Meetings
- Join in PPS-18
- Join in PPS-18
- Professional News
- Professional News
Artikel in diesem Heft
- Contents
- Editorial
- Pioneer of Regenerated Cellulose and Reactive Processing Charles Frederick Cross
- Mixing and Screw Extrusion
- Characterization of Distributive Mixing in Polymer Processing Equipment using Renyi Entropies
- Investigation of Flow Rate and Viscous Dissipation in a Single Screw Pump-Extruder
- Direct Method for Deconvoluting Two Residence Time Distribution Curves
- Process Behavior of Special Mixing Elements in Twin-screw Extruders
- Experimental and Theoretical Study of Polymer Melting in a Co-rotating Twin Screw Extruder
- Experimental and Theoretical Study on the Performance of an Extruder for Cross-linkable PE
- Laminar Fluid Chaotic Mixing in Three-Dimensional Continuous Flow Domains
- Film
- Morphological Characterization of PE Blown Films by Atomic Force Microscopy
- Orientation and Mechanical Properties of Extrusion Cast PA 12 Films in Biaxial Stretching Process
- Injection Molding
- Simulation Opportunities by a Three-dimensional Calculation of Injection Moulding based on the Finite Element Method
- Flow Marks in Injection Molding of PP
- Injection Molding of Plastic Plates Combined with Boss Features on Superplastic Zn–22Al Sheet
- PPS News
- PPS News/Calendar of Future PPS Meetings
- Join in PPS-18
- Join in PPS-18
- Professional News
- Professional News
