Entropy Generation and Optimization Analysis for Gas Flow in Rectangular Ducts with Volumetric Radiation

Entropy generation of a radiative participating gas flow in rectangular ducts is studied. The thermodynamic efficiency for high-temperature flow is also defined. The critical thermodynamic regions for absorption, emission, and scattering processes in the rectangular ducts are identified, and the asp...

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Bibliographic Details
Published in:Arabian Journal for Science and Engineering 2016-05, Vol.41 (5), p.1609-1615
Main Authors: Makhanlall, D., Sahin, A. Z., Jiang, P.
Format: Article
Language:English
Subjects:
Ducts
Engineering
Entropy
Fluid dynamics
Fluid flow
Gas flow
Humanities and Social Sciences
multidisciplinary
Nusselt number
Research Article - Mechanical Engineering
Reynolds number
Science
Thermodynamics
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Summary:Entropy generation of a radiative participating gas flow in rectangular ducts is studied. The thermodynamic efficiency for high-temperature flow is also defined. The critical thermodynamic regions for absorption, emission, and scattering processes in the rectangular ducts are identified, and the aspect ratio for minimum entropy generation is determined. The study is extended by considering the thermodynamic effects of Reynolds number, Boltzmann number, and average transverse Nusselt number. It is shown that the total entropy generation rate and the transport efficiency of duct flows can be controlled through Reynolds number, Boltzmann number, and Nusselt number.
ISSN:1319-8025
2191-4281
DOI:10.1007/s13369-015-1821-8