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3D LES simulations of a static and vertically free-to-oscillate 4:1 rectangular cylinder: effects of the grid resolution

Identificadores del recurso

Álvarez, A. J., Nieto, F., Nguyen, D. T., Owen, J. S., Hernández, S. (2019). 3D LES simulations of a static and vertically free-to-oscillate 4:1 rectangular cylinder: Effects of the grid resolution. Journal of Wind Engineering and Industrial Aerodynamics, 192, p. 31-44.

http://hdl.handle.net/2183/27719

10.1016/j.jweia.2019.06.012

Procedència

(RUC. Repositorio da Universidade da Coruña)

Fitxa

Títol:: 3D LES simulations of a static and vertically free-to-oscillate 4:1 rectangular cylinder: effects of the grid resolution
Tema:: 3D LES; Rectangular cylinder; Vortex shedding; Vortex induced vibrations; Spatial discretisation; Correlations; Coherence; Force coefficients; Strouhal number; Pressure coefficient distribution
Descripció:: [Abstract:] In the present study, the aerodynamics of the flow fields around a static and vertically free-to-oscillate 4:1 rectangular cylinder are analysed by means of 3D LES simulations, adopting the OneEqEddy viscosity model. Integral parameters, pressure distributions, amplitudes of oscillation, coherences and correlations are obtained and compared with the available experimental data. Aiming to ascertain the impact of the boundary conditions and the grid resolution on the accuracy of results, five cases adopting 3 different meshes including two different spanwise discretisations have been considered. When studying the aerodynamics of the cylinder in static conditions, the influence of the spatial discretisation is very limited, and the agreement with experimental data is fairly good. On the other hand, for the free-to-oscillate cylinder, the structural response is dramatically dependent on the spanwise discretisation. The maximum amplitude of the structural response decreases as the mesh resolution increases, providing a closer fit with the experimental data. Also, the spanwise correlation of pressures is studied, finding remarkable differences depending on the level of spatial discretisation.; Ministerio de Economía y Competitividad; BIA2016-76656-R; Ministerio de Economía y Competitividad; BES-2014-068418; Ministerio de Economía y Competitividad; BIA2013-41965-P; Ministerio de Economía y Competitividad; EEBB-I-17-11905; Xunta de Galicia; ED431C2017/72
Idioma:: English
Relació:: https://doi.org/10.1016/j.jweia.2019.06.012
Autor/Productor:: Álvarez Naveira, Antonio José; Nieto Mouronte, Félix; Nguyen, D.T.; Owen, J.S.; Hernández, Santiago
Editor:: Elsevier
Drets:: Atribución-NoComercial-SinDerivadas 3.0 España; http://creativecommons.org/licenses/by-nc-nd/3.0/es/; info:eu-repo/semantics/openAccess
Data:: 2019
Tipo de recurso:: info:eu-repo/semantics/article

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