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The Flow of a Power Law Fluid in a Melt Fed Single Screw Extruder
A simple numerical procedure is proposed for the perfect solution is of the two-dimensional power-law stream equations for a broad channel with a moving boundary. The email address details are used to construct a complete model of the isothermal operation of a single-screw extruder in terms of the compression ratio, the relative lengths of the compression and the metering sections, and the power-rules index of the materials. It is shown a true number of the primary top features of screw extrusion are predicted by the model. By way of examples it is shown that, in program, the isothermal condition could be relaxed, and satisfactory correlation between the theory and experiment can be obtained, through an average extrusion temperatures. The model offers a wide theoretical framework, by which the relative significance of the geometric parameters and the power-rules index on the throughput-pressure characteristics of the screw extrusion could be examined, and the experimental results extrapolated and collated. Examples of the plastic extrusion dies answer are presented by means of contour plots to assist designers and users of single-screw pumping machines.

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