Comparative study of some constitutive equations characterising non-Newtonian fluids

Bhatnagar, P. L. (1967) Comparative study of some constitutive equations characterising non-Newtonian fluids Proceedings of the Indian Academy of Sciences, Section A, 66 (6). pp. 342-352. ISSN 0370-0089

[img]
Preview
PDF - Publisher Version
864kB

Official URL: http://www.ias.ac.in/j_archive/proca/66/6/342-352/...

Related URL: http://dx.doi.org/10.1007/BF03049342

Abstract

This paper compares, in a general way, the predictions of the constitutive equations given by Rivlin and Ericksen, Oldroyd, and Walters. Whether we consider the rotational problems in cylindrical co-ordinates or in spherical polar co-ordinates, the effect of the non-Newtonicity on the secondary flows is collected in a single parametera which can be explicitly expressed in terms of the non-Newtonian parameters that occur in each of the above-mentioned constitutive equations. Thus, for a given value ofa, all the three fluids will have identical secondary flows. It is only through the study of appropriate normal stresses that a Rivlin-Ericksen fluid can be distinguished from the other two fluids which are indistinguishable as long as this non-Newtonian parameter has the same value.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
ID Code:4853
Deposited On:18 Oct 2010 06:30
Last Modified:16 May 2016 15:26

Repository Staff Only: item control page