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Your search keyword '"Couaillier, Vincent"' showing total 5 results
Start Over Author "Couaillier, Vincent" Topic turbulence
5 results on '"Couaillier, Vincent"'

1. Constructing Physically Consistent Subgrid-Scale Models for Large-Eddy Simulation of Incompressible Turbulent Flows

Author

Silvis, Maurits H., Verstappen, R.W.C.P., Couaillier, Vincent, Estivalezes, Jean-Luc, Gleize, Vincent, HiêpLê, Thiên, and Computational and Numerical Mathematics

Subjects
Physics::Fluid Dynamics, Physics, Consistency (statistics), Turbulence, Velocity gradient, Compressibility, Mechanics, Dissipation, Scale model, Scaling, Large eddy simulation
Abstract

We studied the construction of subgrid-scale models for large-eddy simulationof incompressible turbulent flows, focusing on consistency with importantmathematical and physical properties. In particular, we considered the symmetriesof the Navier-Stokes equations, and the near-wall scaling and dissipation behaviorof the turbulent stresses. After showing that existing models do not all satisfy thedesired properties, we discussed a general class of subgrid-scale models based onthe local filtered velocity gradient. We provided examples of models from this classthat preserve several of the symmetries of the Navier-Stokes equations and exhibitthe same near-wall scaling behavior as the turbulent stresses. Furthermore, thesemodels are capable of describing nondissipative effects.

Published
2017

2. On the use of a high-order discontinuous Galerkin method for DNS and LES of wall-bounded turbulence.

Author

de la Llave Plata, Marta, Couaillier, Vincent, and le Pape, Marie-Claire

Subjects
*GALERKIN methods, *LARGE eddy simulation models, *NUMERICAL analysis, *TURBULENCE, *MATHEMATICAL analysis
Abstract

Highlights • We assess the performance of a high-order DG method for turbulent flow simulation. • DNS and LES of two wall-bounded flow configurations are performed. • Global hp-convergence analyses are carried out for the DNS configurations. • Subgrid-scale modelling is used for the LES and compared to the nomodel approach. • Local hp-adaption with subgrid modelling appear essential for practical DG-LES. Abstract We assess the performance of a high-order discontinuous Galerkin (DG) approach to simulate wall-bounded turbulent flows for a range of Reynolds numbers. First, a plane channel flow configuration with turbulent heat transfer at R e τ = 640 is considered. Second, a detached flow configuration is investigated. This configuration represents the flow over periodically arranged hills. Four bulk Reynolds numbers Re b are considered: 2800, 10 595, 19 000, and 37 000. For R e b = 2800 direct numerical simulation (DNS) is used. Large-eddy simulations (LES) based on the WALE subgrid-scale model are carried out for the higher Re b. The simulation results are compared to reference data from CFD and experiment. hp -convergence analyses are performed which demonstrate the superior performance of increasing the polynomial order as compared to refining the mesh. It appears from this work that the use of a subgrid modelling approach together with local hp-adaptation could greatly improve the accuracy of the solution without penalising the computational cost of the simulation. [ABSTRACT FROM AUTHOR]

Published
2018
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3. Large Eddy Simulation of Turbulent Heat Transfer in Pipe Flows of Temperature Dependent Power-Law Fluids

Author

Ganmbode, Paulin Sourou, Ould-Rouiss, Meryem, Nicolas, Xavier, Orlandi, Paolo, Hirschel, Ernst Heinrich, Founding Editor, Schröder, Wolfgang, Series Editor, Boersma, Bendiks Jan, Editorial Board Member, Fujii, Kozo, Editorial Board Member, Haase, Werner, Editorial Board Member, Leschziner, Michael A., Editorial Board Member, Periaux, Jacques, Editorial Board Member, Pirozzoli, Sergio, Editorial Board Member, Rizzi, Arthur, Editorial Board Member, Roux, Bernard, Editorial Board Member, Shokin, Yurii I., Editorial Board Member, Mäteling, Esther, Managing Editor, Deville, Michel, editor, Calvin, Christophe, editor, Couaillier, Vincent, editor, De La Llave Plata, Marta, editor, Estivalèzes, Jean-Luc, editor, Lê, Thiên Hiêp, editor, and Vincent, Stéphane, editor

Published
2021
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4. A high-order multiscale approach to turbulence for compact nodal schemes.

Author

Navah, Farshad, de la Llave Plata, Marta, and Couaillier, Vincent

Subjects
*MULTISCALE modeling, *TURBULENCE, *REYNOLDS number, *LARGE eddy simulation models, *COMPUTER simulation, *FLUX (Energy)
Abstract

This article presents a formulation that extends the multiscale modelling for compressible large-eddy simulation to a vast family of compact nodal numerical methods represented by the high-order flux reconstruction scheme. The theoretical aspects of the proposed formulation are laid down via mathematical derivations which clearly expose the underlying assumptions and approximations and provide sufficient details for accurate reproduction of the methodology. The final form is assessed on a Taylor–Green vortex benchmark with Reynolds number of 5000 and compared to filtered direct numerical simulation data. These numerical experiments exhibit the important role of sufficient de-aliasing, appropriate amount of upwinding from Roe's numerical flux and large/small scale partition, in achieving better agreement with reference data, especially on coarse grids, when compared to the baseline implicit large-eddy simulation. [ABSTRACT FROM AUTHOR]

Published
2020
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5. Error Estimation and Adaptive Mesh Refinement for Aerodynamic Flows

Author

F. Prill, Tobias Leicht, Ralf Hartmann, Joachim Held, Kroll, Norbert, Bieler, Heribert, Deconinck, Herman, Couaillier, Vincent, van der Ven, Harmen, and Sorensen, Kaare

Subjects
Mathematical optimization, Adaptive mesh refinement, Turbulence, CASE, adjoint-based error estimation, Laminar flow, Aerodynamics, turbulent flows, Physics::Fluid Dynamics, Aerodynamic force, symbols.namesake, Test case, Mach number, Discontinuous Galerkin method, symbols, Applied mathematics, mesh refinement, Mathematics
Abstract

We consider the adjoint-based error estimation and goal-oriented mesh refinement for single and multiple aerodynamic force coefficients as well as residual-based mesh refinement applied to various three-dimensional laminar and turbulent aerodynamic test cases defined in the ADIGMA project.

Published
2010

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