Abstract
AbstractAs a part of continuous study, annular extrudate swell phenomena was investigated using a finite element method. For a Newtonian fluid, gravitational force and surface tension effects are considered. For non‐Newtonian fluids, power‐law fluid and second‐order fluid were considered. Some interesting results were found for non‐Newtonian fluids. For highly shear thinning fluid, thickness was contracted instead of swelling. For second‐order fluid, the analysis was confined only to weak elastic fluid. Explanations are presented for high Weisenberg number problems.
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