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A three‐dimensional finite element analysis of the effect of reynolds number on extrudate swell of newtonian liquids from square dies

 

作者: W. A. Gifford,  

 

期刊: The Canadian Journal of Chemical Engineering  （WILEY Available online 1993）
卷期: Volume 71, issue 1  

页码: 161-167

 

ISSN:0008-4034

 

年代: 1993

 

DOI:10.1002/cjce.5450710121

 

出版商: Wiley Subscription Services, Inc., A Wiley Company

 

关键词: die swell;extrudate swell;finite element;free surface;square die

 

数据来源: WILEY

 

摘要:

AbstractThe effect of Reynolds number upon the extrusion of a Newtonian fluid exiting a square die is examined. It is shown that the extrudate swells at low Reynolds number but contracts at high ones. At zero Reynolds number, the maximum die swell ratio of 1.2 occurs. A swell ratio of one occurs at a Reynolds number of about 24. At large Reynolds numbers, the extrudate contracts to a circular cross‐section with a swell ratio of 0.961

 

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