Numerical Investigation of the Bending of Slender Wall-Mounted Cylinders in Low Reynolds Number Flow

  • Gabriel Axtmann
  • Ulrich Rist
  • Franziska Hegner
  • Christoph Bruecker
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 132)

Abstract

The aim of the present studies is construction of reference data for the prediction of the bending of sensor hairs close to the wall in a boundary-layer flow. Three-dimensional direct numerical simulations (DNS) of finite cylinders in single and tandem configuration are carried out. The numerical setup is guided by a towing-tank experiment performed at the Technical University of Freiberg. All numerical configurations are chosen to complement and extend the experimental work. The bending curve of the cylinders is estimated by a static approach according to 1st-order Euler-Bernoulli beam theory. Based on the forces, extrapolated from the DNS of the flow field, the influence of wall- and top-end effects and Reynolds numbers between 5 and 40 is examined more deeply. Also, varying positions of cylindrical tandem configurations in stream- and spanwise directions are investigated. The present work shows good agreement between simulation and experiment.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Gabriel Axtmann
    • 1
  • Ulrich Rist
    • 1
  • Franziska Hegner
    • 2
  • Christoph Bruecker
    • 3
  1. 1.Institute of Aerodynamics and Gas DynamicsStuttgartGermany
  2. 2.Institute of Mechanics and Fluid DynamicsFreibergGermany
  3. 3.Department of Mechanical Engineering and AeronauticsCity University LondonLondonUK

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