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Numerical Simulation of an Oscillating Cylinder Using Large Eddy Simulation and Implicit Large Eddy Simulation

Andreas Feymark (Institutionen för sjöfart och marin teknik, Marine Design) ; Niklas Alin (Institutionen för sjöfart och marin teknik) ; Rickard Bensow (Institutionen för sjöfart och marin teknik, Marine Design) ; Christer Fureby (Institutionen för sjöfart och marin teknik, Marine Design)
Journal of Fluids Engineering (0098-2202). Vol. 134 (2012), 3,
[Artikel, refereegranskad vetenskaplig]

In this work, we use large eddy simulation (LES) to study the influence of grid and subgrid model on the lift and drag force predictions of a fixed cylinder undergoing streamwise sinusoidal oscillations in a steady flow, resulting in a varying Reynolds number, Re, within the range 405 <= Re <= 2482. This benchmark case is a first step toward studying engineering applications related to flow-induced vibrations. We examine the influence of both grid resolution and the subgrid model using implicit and explicit LES. The methodology used, LES based on a finite-volume method capable of handling moving meshes, are found to provide force predictions that agree well with experimentally measured data, with respect both to the overall flow development and force magnitude.

Nyckelord: vortex formation, streamwise oscillations, turbulent-flow, steady, current, wake, model

Denna post skapades 2012-05-11. Senast ändrad 2014-09-02.
CPL Pubid: 157551


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Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Marine Design (2012-2014)
Institutionen för sjöfart och marin teknik


Teknisk mekanik

Chalmers infrastruktur

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