Title: Numerical Simulation of Polymer Flow in Different Extrusion Dies
Abstract:Using program POLYFLOW,numerical simulation was implemented for the two dimensional isothermal polymer melt flow through the extrusion die with three types of stick.The distributions of velocity and p...Using program POLYFLOW,numerical simulation was implemented for the two dimensional isothermal polymer melt flow through the extrusion die with three types of stick.The distributions of velocity and pressure under various extrusion dies were worked out.Analysis and comparison show that for the shear die,the local circumfluence existed near its entrance,while for the bell-mouthed and the streamlined die,the local circumfluence disappeared.Subtractive pressure at the outlet of the bell- mouthed die was-172.9 MPa,while it was-43.72 MPa of the streamlined die.Contrast to the for- mer,the extrusion pressure reduced 75% of the streamlined die.And finally,the optimum structural design of the extrusion die was the streamlined die.Read More
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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