Journal
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
Volume 48, Issue -, Pages 18-38Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cnsns.2016.12.013
Keywords
Flow past a circular cylinder; Vortex shedding; Vorticity dynamics; Vortex method; Particle method; Diffused vortex hydrodynamics
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Funding
- Flagship Project RITMARE - The Italian Research for the Sea
- Italian Ministry of Education, University and Research within the National Research Program
- Project ENSiS: ENhanced Sph Schemes for complex free-surface flows - Ecole Centrale de Nantes (ECN)
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In the present paper the study of the two-dimensional flow field past a circular cylinder for Reynolds number up to 5 center dot 10(5) is addressed. A Lagrangian particle method approach has been exploited and the simulations have been performed with high spatial resolutions in order to resolve all the main vortical scales. Long simulation time evolutions have been performed in order to get the vortex shedding dynamics as well as the Fourier analysis of the loads. The adopted numerical method allows to discuss both local (boundary layer and near wake dynamics) and global (far wake dynamics) aspects of the problem. The fundamental aspects related to the different identified flow states as well as the drag crisis mechanism are investigated.(C) 2016 Elsevier B.V. All rights reserved.
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