MODELING THE CHAIN CONFORMATION OF POLYMER MELTS IN CONTRACTION FLOW*

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MODELING THE CHAIN CONFORMATION OF POLYMER MELTS IN CONTRACTION FLOW*

Papers | Updated：2021-06-21

- MODELING THE CHAIN CONFORMATION OF POLYMER MELTS IN CONTRACTION FLOW*
- Vol. 21, Issue 1, Pages: 35-43(2003)
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- Published：20 February 2003
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MODELING THE CHAIN CONFORMATION OF POLYMER MELTS IN CONTRACTION FLOW*[J]. 2003, 21(1): 35-43.
DOI：

MODELING THE CHAIN CONFORMATION OF POLYMER MELTS IN CONTRACTION FLOW*[J]. 2003, 21(1): 35-43. DOI：

摘要

A constitutive model of quasi-Newtonian fluid based on the type of flow is used in abrupt planar contraction now.The numerical results from finite element analysis are consistent with experimental data for stress patterns and velocityprofiles in the flow field. The chain conformations of polymer melts are then investigated in such a planar contraction byusing the phenomenological model with internal parameters proposed by the author. That is

the shape and orientation of polymer chain coils are predicted and discussed in different flow regions of the contraction flow field that possess simple shear flow

extensional flow

vortical flow

and mixed flow respectively.

Abstract

the shape and orientation of polymer chain coils are predicted and discussed in different flow regions of the contraction flow field that possess simple shear flow

extensional flow

vortical flow

and mixed flow respectively.

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