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Assessment of response surface-based optimization techniques unsteady flow around bluff bodies
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-6958-5508
2002 (English)In: A collection of technical papers: 9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization : Atlanta, Georgia, 4 - 6 September 2002, Reston, Va.: American Institute of Aeronautics and Astronautics, AIAA , 2002Conference paper, Published paper (Refereed)
Abstract [en]

The shape of a trapezoidal obstacle immersed in a 2D unsteady, viscous flow is optimized by response surface (RS) techniques based on combined criteria of minimum total drag and maximum mixing efficacy. Time-dependent Navier-Stokes computations are conducted to supply the database. In order to address the issues related to noise, an outlier analysis based on iteratively re-weighted least square (IRLS) method is applied. The results indicate that optimum designs having a low mean drag coefficient tend to be square-shaped, while designs having a large value of the mixing effectiveness are more trapezoidally-shaped. Both RS and IRLS models yield consistent designs, indicating that the present task is well handled by the techniques employed. In addition, the RS methodology is used to identify domains within the design space within which all designs are, for practical purpose, acceptable.

Place, publisher, year, edition, pages
Reston, Va.: American Institute of Aeronautics and Astronautics, AIAA , 2002.
Series
AIAA papers, ISSN 0146-3705 ; 2002-5596
Research subject
Fluid Mechanics; Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-40184Local ID: f362c5b0-64ad-11de-9f57-000ea68e967bISBN: 1-563-47550-2 (print)OAI: oai:DiVA.org:ltu-40184DiVA: diva2:1013707
Conference
AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization : 04/09/2002 - 06/09/2002
Note
Godkänd; 2002; 20090629 (andbra)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-06-29Bibliographically approved

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