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Flow patterns in a non‐Newtonian fluid in a single‐screw extruder

W. D. Mohr, Jason Clapp, Frank C. Starr

Open publisher page 9 citations

Abstract

Abstract Flow patterns in the channel of a screw extruder have been investigated in a study utilizing a model extruder with stationary screw and a rotating, transparent barrel. Photographs of flow streamlines at conditions over the full range of output restriction are presented for a non‐Newtonian fluid. A technique employing photographs of particle tracers was used with the same apparatus to permit quantitative measurement of velocity profiles with both a Newtonian and a non‐Newtonian fluid.

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Abstract Flow patterns in the channel of a screw extruder have been investigated in a study utilizing a model extruder with stationary screw and a rotating, transparent barrel. Photographs of flow streamlines at conditions over the full range of output restriction are presented for a non‐Newtonian fluid. A technique employing photographs of particle tracers was used with the same apparatus to permit quantitative measurement of velocity profiles with both a Newtonian and a non‐Newtonian fluid.

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Available abstract

Abstract Flow patterns in the channel of a screw extruder have been investigated in a study utilizing a model extruder with stationary screw and a rotating, transparent barrel. Photographs of flow streamlines at conditions over the full range of output restriction are presented for a non‐Newtonian fluid. A technique employing photographs of particle tracers was used with the same apparatus to permit quantitative measurement of velocity profiles with both a Newtonian and a non‐Newtonian fluid.

Key concepts: Streamlines, streaklines, and pathlines, Plastics extrusion, Non-Newtonian fluid, Newtonian fluid, Materials science, Mechanics, Flow (mathematics), Generalized Newtonian fluid

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