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Title:
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Large-eddy simulations of turbulent flow around a wall-mounted cube using an adaptive mesh refinement approach
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Author:
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Antepara Zambrano, Óscar; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio; Favre, Federico
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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 |
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Abstract:
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In the present work two LES models for predicting turbulent flow and an Adaptive Mesh Refinement (AMR) technique are proposed and tested for a fully 3D geometry: turbulent flow around a wall-mounted cube at Reh=7235. The wall-adapting eddy viscosity model within a variational multiscale method (VMS-WALE) and the QR model are tested to predict the flow around the body. The numerical algorithm used to solve the governing equations preserves the symmetry and conservation properties. AMR algorithm is applied to get enough grid-resolution to solve the vortical structures near the body, adapting the mesh according to physics-based refinement criteria. High order conservative schemes are applied in the connection between coarse and fine regions. The numerical results obtained are assessed and compared to the results of the direct numerical simulations (DNS) on the basis of first and second order statistics. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
-Fluid mechanics
-Turbulence
-Mecànica de fluids
-Turbulència |
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Rights:
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Document type:
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Article - Submitted version
Conference Object |
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