Numerical investigation of the bending of slenderwall-mounted cylinders in low reynolds number flow

Axtmann, G., Rist, U., Hegner, F. & Bruecker, C. (2016). Numerical investigation of the bending of slenderwall-mounted cylinders in low reynolds number flow. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 132, pp. 191-201. doi: 10.1007/978-3-319-27279-5_17

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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 towingtank 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.

Item Type: Article
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/978-3-319-27279-5_17
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/15113

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