• Sep 20, 2019 News!IJMMM Had Implemented Online Submission System, Please Submit New Submissions through This System Only!   [Click]
  • Feb 26, 2018 News!'Writing Tips' shared by Prof. Ian McAndrew!   [Click]
  • Mar 23, 2021 News!Vol. 7, No. 2 has been indexed byInspec (IET)!   [Click]
General Information
    • ISSN: 1793-8198 (Print)
    • Abbreviated Title: Int. J. Mater. Mech. Manuf.
    • Frequency: Bimonthly
    • DOI: 10.18178/IJMMM
    • Editor-in-Chief: Prof. Ian McAndrew
    • Co-editor-in-Chief: Prof. K. M. Gupta
    • Executive Editor: Cherry L. Chen
    • Abstracting/Indexing: Inspec (IET), Chemical Abstracts Services (CAS),  ProQuest, Crossref, Ulrich's Periodicals Directory,  EBSCO.
    • E-mail ijmmm@ejournal.net

Prof. Ian McAndrew
Capitol Technology University, USA
It is my honor to be the editor-in-chief of IJMMM. I will do my best to work with the editorial team and help make this journal better.

IJMMM 2013 Vol.1(4): 324-346 ISSN: 1793-8198
DOI: 10.7763/IJMMM.2013.V1.74

A Nonlinear Dynamical Modeling and Control Method for the Vorticity Control of the Flow past a Circular Cylinder

H. Deniz Karaca, G. Deniz Özen, and Coşku Kasnakoğlu
Abstract—In this paper a systematic approach for the nonlinear modeling and feedback control of vorticity behind an immersed circular cylinder system was developed. In this technique first a number of control input points over the cylinder and some measurement points for vorticity past the cylinder are assigned. A type of nonlinear dynamic model (namely a Hammerstein-Wiener (HW) model) of the flow field is estimated via system identification techniques using measurement data obtained from a chirp input function. Once the dynamical model of the system is estimated, a controller for the linear block of the HW model is designed using internal model control method, and this controller is then mapped to the HW model by reversing the input/output nonlinearity functions. The procedure described is implemented and tested numerically in MATLAB and CFD computations performed on the closed-loop system show that the controller is capable of achieving significant reduction in the vorticity levels past the cylinder.

Index Terms—Flow past a circular cylinder, nonlinear dynamical modeling and control, system identification, hammerstein-wiener method, vorticity control.

H. D. Karaca and C. Kasnakoglu are with the Department of Electrical and Electronics Engineering, TOBB ETU, 06560, Ankara, Turkey (e-mail: hdkaraca@gmail.com, kasnakoglu@etu.edu.tr). G. D. Ozen is with the Department of Physics in METU, Ankara, Turkey (e-mail: gd.ozen@gmail.com).


Cite:H. Deniz Karaca, G. Deniz Özen, and Coşku Kasnakoğlu, "A Nonlinear Dynamical Modeling and Control Method for the Vorticity Control of the Flow past a Circular Cylinder," International Journal of Materials, Mechanics and Manufacturing vol. 1, no. 4, pp. 324-346, 2013.

Copyright © 2008-2020. International Journal of Materials, Mechanics and Manufacturing. All rights reserved.
E-mail: ijmmm@ejournal.net