Bhatnagar, PL (1967) Comparative study of some constitutive equations characterising non-Newtonian fluids. In: Proceedings of the Indian Academy of Sciences - Section A, 66 (6). pp. 342-352.
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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 parameterα 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 ofα, 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:||Journal Article|
|Additional Information:||Copy right of this article belongs to Indian Academy of Sciences.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Mathematics|
|Date Deposited:||02 Jun 2010 08:24|
|Last Modified:||19 Sep 2010 06:06|
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