Entry pressure correlations in capillary flow

Ziyue Zhang; Savvas G. Hatzikiriakos

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Entry pressure correlations in capillary flow

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The entry pressure in capillary rheometry is determined by using the Bagley correction method to accurately determine the viscosity of polymers at high shear rates. This method requires the use of at least three capillary dies having the same diameter and different lengths. In this paper, the entry pressure of over 40 sets of experimental data for different polymers is correlated as a function of wall shear stress for two different classes of polymers, namely, linear and branched. The derived correlations can directly be applied to correct the raw capillary data from a single capillary die, thus minimizing the experimental error, effort, and time.

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来源
《Physics of fluids》 |2020年第1期|073106-1-073106-10|共10页
作者
Ziyue Zhang; Savvas G. Hatzikiriakos;
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作者单位

Department of Chemical Engineering, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada;

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原文格式 PDF
正文语种英语
中图分类流体力学;
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Entry pressure correlations; capillary flow; experimental error;

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Entry pressure correlations in capillary flow

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