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Entropy 2015, 17(8), 5593-5610;

Entropy Minimization Design Approach of Supersonic Internal Passages

Von Karman Institute, Chaussee de Waterloo 72, Rhode Saint Genese 1640, Belgium
Zucrow Laboratories, Purdue University, 500 Allison Road, West Lafayette, IN 47907, USA
Author to whom correspondence should be addressed.
Academic Editors: Guanrong Chen, C.K. Michael Tse, Mustak E. Yalcin, Hai Yu and Mattia Frasca
Received: 25 May 2015 / Revised: 27 July 2015 / Accepted: 29 July 2015 / Published: 3 August 2015
(This article belongs to the Special Issue Recent Advances in Chaos Theory and Complex Networks)
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Fluid machinery operating in the supersonic regime unveil avenues towards more compact technology. However, internal supersonic flows are associated with high aerodynamic and thermal penalties, which usually prevent their practical implementation. Indeed, both shock losses and the limited operational range represent particular challenges to aerodynamic designers that should be taken into account at the initial phase of the design process. This paper presents a design methodology for supersonic passages based on direct evaluations of the velocity field using the method of characteristics and computation of entropy generation across shock waves. This meshless function evaluation tool is then coupled to an optimization scheme, based on evolutionary algorithms that minimize the entropy generation across the supersonic passage. Finally, we assessed the results with 3D Reynolds Averaged Navier Stokes calculations. View Full-Text
Keywords: supersonic internal flow; method of characteristics; intakes; turbomachinery; optimization supersonic internal flow; method of characteristics; intakes; turbomachinery; optimization

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Sousa, J.; Paniagua, G. Entropy Minimization Design Approach of Supersonic Internal Passages. Entropy 2015, 17, 5593-5610.

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