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Designs 2018, 2(4), 36; https://doi.org/10.3390/designs2040036

Computational Design Optimization for S-Ducts

1
School of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UK
2
Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
*
Author to whom correspondence should be addressed.
Received: 4 September 2018 / Revised: 22 September 2018 / Accepted: 26 September 2018 / Published: 12 October 2018
(This article belongs to the Special Issue Challenges and Progress in Turbomachinery Design)
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Abstract

In this work, we investigate the computational design of a typical S-Duct that is found in the literature. We model the design problem as a shape optimization study. The design parameters describe the 3D geometrical changes to the shape of the S-Duct and we assess the improvements to the aerodynamic behavior by considering two objective functions: the pressure losses and the swirl. The geometry management is controlled with the Free-Form Deformation (FFD) technique, the analysis of the flow is performed using steady-state computational fluid dynamics (CFD), and the exploration of the design space is achieved using the heuristic optimization algorithm Tabu Search (MOTS). The results reveal potential improvements by 14% with respect to the pressure losses and by 71% with respect to the swirl of the flow. These findings exceed by a large margin the optimality level that was achieved by other approaches in the literature. Further investigation of a range of optimum geometries is performed and reported with a detailed discussion. View Full-Text
Keywords: S-duct design; computational design; stochastic optimization; tabu search; free-form deformation S-duct design; computational design; stochastic optimization; tabu search; free-form deformation
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D’Ambros, A.; Kipouros, T.; Zachos, P.; Savill, M.; Benini, E. Computational Design Optimization for S-Ducts. Designs 2018, 2, 36.

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