Experimental Determination of the Secondary Normal Stress Difference for Aqueous Polymer Solutions

1965 ◽  
Vol 9 (2) ◽  
pp. 273-286 ◽  
Author(s):  
John D. Huppler
Keyword(s):  
Experimental Determination ◽  
Normal Stress ◽  
Polymer Solutions ◽  
Normal Stress Difference ◽  
Stress Difference ◽  
Aqueous Polymer

Experimental Determination of Secondary Normal Stress Difference in Annular Flow of Polymer Melts

1980 ◽  
Vol 24 (3) ◽  
pp. 275-286 ◽  
Author(s):  
Seisuke Okubo ◽  
Yukio Hori
Keyword(s):  
Experimental Determination ◽  
Normal Stress ◽  
Annular Flow ◽  
Polymer Melts ◽  
Normal Stress Difference ◽  
Stress Difference

The measurement of the second normal stress difference for some polymer solutions

1980 ◽  
Vol 6 (3-4) ◽  
pp. 303-324 ◽  
Author(s):  
M. Keentok ◽  
A.G. Georgescu ◽  
A.A. Sherwood ◽  
R.I. Tanner
Keyword(s):  
Normal Stress ◽  
Polymer Solutions ◽  
Normal Stress Difference ◽  
Stress Difference ◽  
Second Normal Stress Difference

Prediction of the first normal stress difference in polymer solutions

AIChE Journal ◽  
1969 ◽  
Vol 15 (5) ◽  
pp. 643-653 ◽  
Author(s):  
Bernard J. Meister ◽  
R. Dale Biggs
Keyword(s):  
Normal Stress ◽  
Polymer Solutions ◽  
Normal Stress Difference ◽  
Stress Difference ◽  
First Normal Stress Difference

An appraisal of the exit pressure method for normal stress measurements

1985 ◽  
Vol 5 (2) ◽  
pp. 173-182 ◽  
Author(s):  
J. Vlachopoulos ◽  
E. Mitsoulis
Keyword(s):  
Normal Stress ◽  
Fluid Model ◽  
Normal Stress Difference ◽  
Creeping Flow ◽  
Stress Difference ◽  
First Normal Stress Difference ◽  
Flow Equations ◽  
Pressure Method ◽  
Exit Pressure

Abstract A numerical experiment has been carried out to assess the errors involved in using Han’s exit pressure method for the determination of the first normal stress difference with a slit die. The creeping flow equations for a viscoelastic fluid model have been solved using the finite element method. The calculated exit pressures are used in the determination of normal stresses and are compared to those obtained directly from the constitutive model. The results show that the exit pressure method gives reasonably accurate estimates of the first normal stress difference.

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