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DNS of Turbulent Channel Flow With a Flexible Square Cylinder

[+] Author Affiliations
Makoto Takeuchi, Koichi Tsujimoto, Toshihiko Shakouchi, Toshitake Ando

Mie University, Tsu, Japan

Paper No. AJKFluids2015-24725, pp. V01AT24A007; 8 pages
  • ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
  • Volume 1A: Symposia, Part 2
  • Seoul, South Korea, July 26–31, 2015
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5721-3
  • Copyright © 2015 by JSME


In the present paper in order to investigate possibility of flow control using elastic body, we conduct a simulation of a finite-length flexible cylinder installed in turbulent channel flow. For the flexible cylinder, the rigorous equation of motion for elastic continuum is solved with a finite volume method; the effect of existence of cylinder in the flow computation is taken into account using the immersed boundary method. From instantaneous and time averaged flow quantities, we demonstrate that the flexible cylinder markedly modulates the wake structure depending on the elasticity of cylinder. Further in order to extract coherent structures, the DMD (dynamic mode decomposition) method are applied. The primary flow structures in the wake of cylinder are demonstrated.

Copyright © 2015 by JSME



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