Author： Langeroudi H. Aghanajafi C.
Publisher： Springer Publishing Company
ISSN： 0164-0313
Source： Journal of Fusion Energy, Vol.25, Iss.3-4, 2006-12, pp. : 165-173
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Abstract
In this paper, the entropy generation of a non-Newtonian fluid such as Tho2 inside a circular channel with constant surface temperature has been investigated. The pressure gradient along the pipe line, the difference between the dimensionless inlet wall temperature and fluid temperature and modified Stanton number are the key elements to calculate the entropy generation for three different non-Newtonian fluids. Also the variation of the dimensionless entropy generation and the pumping power to heat transfer rate ratio is calculated for two different cases, the first case involves fixed pipe length and variable inlet temperature and the second case considers fixed fluid inlet temperature and variable pipe length.
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