Dynamical optimization of the trailing-edge shape of a bluff body by means of Extremum-seeking

Kazutaka Nakayama, Hiroshi Naito, Koji Fukagata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we minimize the drag coefficient caused by a bluff body by optimizing the shape variables of the bluff body by means of Extremum-seeking. We consider two cases: Single Input Single Output (SISO) system with only one shape variable and Dual Input Single Output (DISO) system with two shape variables. For SISO Extremum-seeking, we compare with the result of SISO Genetic Algorithm (GA). As a result, we successfully optimized the bluff body shape and reduced the drag. The computational cost of SISO Extremum-seeking and DISO Extremum-seeking is found to be less than 96% and 92% of SISO GA respectively.

Original languageEnglish
Title of host publication21st AIAA Computational Fluid Dynamics Conference
Publication statusPublished - 2013
Event21st AIAA Computational Fluid Dynamics Conference - San Diego, CA, United States
Duration: 2013 Jun 242013 Jun 27

Other

Other21st AIAA Computational Fluid Dynamics Conference
CountryUnited States
CitySan Diego, CA
Period13/6/2413/6/27

Fingerprint

Genetic algorithms
Drag coefficient
Drag
Costs

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Nakayama, K., Naito, H., & Fukagata, K. (2013). Dynamical optimization of the trailing-edge shape of a bluff body by means of Extremum-seeking. In 21st AIAA Computational Fluid Dynamics Conference

Dynamical optimization of the trailing-edge shape of a bluff body by means of Extremum-seeking. / Nakayama, Kazutaka; Naito, Hiroshi; Fukagata, Koji.

21st AIAA Computational Fluid Dynamics Conference. 2013.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nakayama, K, Naito, H & Fukagata, K 2013, Dynamical optimization of the trailing-edge shape of a bluff body by means of Extremum-seeking. in 21st AIAA Computational Fluid Dynamics Conference. 21st AIAA Computational Fluid Dynamics Conference, San Diego, CA, United States, 13/6/24.
Nakayama K, Naito H, Fukagata K. Dynamical optimization of the trailing-edge shape of a bluff body by means of Extremum-seeking. In 21st AIAA Computational Fluid Dynamics Conference. 2013
Nakayama, Kazutaka ; Naito, Hiroshi ; Fukagata, Koji. / Dynamical optimization of the trailing-edge shape of a bluff body by means of Extremum-seeking. 21st AIAA Computational Fluid Dynamics Conference. 2013.
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