Numerical Practice in Polymer Processing
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Different numerical methods are used. Finite differences are simple and fast to apply, when the geometries are simple. Finite elements is the more often used method. It can be applied to complex geometries, with accurate constitutive equations. Three dimensional codes are computationally expensive. Boundary elements can be computationally inexpensive. Control volume is relatively computationally inexpensive. It is often used in injection molding softwares.