Title:
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Flow dynamics in the turbulent wake of a sphere at sub-critical Reynolds numbers
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Author:
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Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Oliva Llena, Asensio
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor |
Abstract:
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The direct numerical simulation of the flow over a sphere is performed.
The computations are carried out in the sub-critical regime at Re = 3700 and Re =
10000 (based on the free-stream velocity and the sphere diameter). A parallel unstructured
symmetry-preserving formulation is used for simulating the flow. Particular
attention is devoted to investigate the shear-layer instabilities and its influence in the vortical structures in the wake of the sphere. Main features of the flow including power spectra of a set of selected monitoring probes at different positions are
described and discussed in detail. Detailed information about turbulent statistics are
also provided. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids -Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica::Dinàmica -Fluid dynamics -Turbulence -Dinàmica de fluids -Turbulència |
Rights:
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Document type:
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Article - Published version Conference Object |
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