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Your search keyword '"OGER, G."' showing total 7 results
Start Over Author "OGER, G." Topic [phys.meca.mefl]physics [physics]/mechanics [physics]/fluid mechanics [physics.class-ph]
7 results on '"OGER, G."'

1. Development of new Cartesian explicit solver for hydrodynamic flows

Author

Bigay, P., Leroy, C., OGER, G., Guilcher, Pierre-Michel, Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS), and HydrOcean

Subjects
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2013

2. Parallel hybrid CPU/GPU acceleration of the 3-D parallel code SPH-flow

Author

OGER, G., JACQUIN, E., DORING, M., Guilcher, Pierre-Michel, DOLBEAU, R., CALBEGUEN, P.L., BERTAUX, L., LE TOUZE, D., Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), and École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

3. Simulation of liquid impacts using a multiphase parallel SPH model

Author

Guilcher, Pierre-Michel, OGER, G., JACQUIN, E., Brosset, L., Grenier, N., LE TOUZE, D., Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), and École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

4. 3D simulation of aircraft ditching using the parallel SPH model SPH-Flow

Author

LE TOUZE, D., OGER, G., JACQUIN, E., Guilcher, Pierre-Michel, Alessandrini, B., Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), and École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009

5. Simulations of complex hydro-elastic problems using the parallel SPH model SPH-Flow

Author

OGER, G., JACQUIN, E., Guilcher, Pierre-Michel, Brosset, L., DEUFF, J.B., LE, TOUZE, Alessandrini, B., Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), and École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009

6. Simulations of Ship flows at High Froude Numbers using Smoothed Particles Hydrodynamics

Author

OGER, G., LE, TOUZE, Guilcher, Pierre-Michel, Alessandrini, B., Ferrant, P., Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), and École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2007

7. Advances in the development of a new cartesian explicit solver for hydrodynamics

Author

Bigay, P., Leroy, C., Oger, G., Guilcher, P. -M, David Le Touzé, Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), and École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Finite element method, Marine engineering, MathematicsofComputing_NUMERICALANALYSIS, Explicit, Cartesian, Hydrodynamics, Weakly-compressible, Viscosity, [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits [Àrees temàtiques de la UPC], ComputingMilieux_MISCELLANEOUS, ComputingMethodologies_COMPUTERGRAPHICS
Abstract

In order to efficiently address complex problems in hydrodynamics, the advances in the dev lopment of a new method are presented here. This new CFD solver aims at obtaining a good compromise in terms of accuracy, computational efficiency, and easy handling of complex geometries. The chosen method is an Explicit Cartesian Finite Volume method for Hydrodynamics (ECFVH) based on a compressible (hyperbolic) solver, with an embedded method for interfaces and geometry handling. The solver's explicit nature is obtained through a weakly-compressible approach chosen to simulate nearly-incompressible flows. The explicit cell-centered resolution allows for an efficient solving of very large simulations together with a straightforward handling of multi-physics. The use of an embedded Cartesian grid ensures accuracy and efficiency, but also implies the need for a specific treatment of complex solid geometries, such as the cut-cell method in the fixed or moving body frame. Robustness of the cut-cell method is ensured by specific procedures to circumvent small cell volume numerical errors. A characteristic flux method for solving the hyperbolic part of the Navier-Stokes equations is used and introduces numerical viscosity. This viscosity is evaluated prior to modeling viscous and turbulent effects. In a first approach presented here viscous effects are computed via a finite difference Laplacian operator introduced as a source term. This solver is validated on 2-D test cases.

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