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Your search keyword '"Houzeaux, Guillaume"' showing total 2 results
Start Over Author "Houzeaux, Guillaume" Topic high performance computing Topic simulation methods & models
2 results on '"Houzeaux, Guillaume"'

1. Parallel uniform mesh multiplication applied to a Navier–Stokes solver.

Author

Houzeaux, Guillaume, de la Cruz, Raúl, Owen, Herbert, and Vázquez, Mariano

Subjects
*PARALLEL computers, *MULTIPLICATION, *NAVIER-Stokes equations, *SIMULATION methods & models, *APPROXIMATION theory, *HIGH performance computing, *SUPERCOMPUTERS
Abstract

Abstract: We present here the enhancement of a parallel incompressible Navier–Stokes solver to be able to manage very large meshes. Mesh generation in engineering applications is often the bottleneck of the complete simulation process. The mesh is the basis of the discretization algorithm and the first “lego” of a simulation. A mesh should approximate well the necessary geometrical elements of the computational domain. In addition, it should be fine enough to capture the relevant physical scales of the engineering problem. Usually, commercial mesh generators do well with the first task. They include refinement tools for boundary layer elements and local adaptivity. However, it is quite difficult to generate very large meshes (say of the order of thousands of millions of elements) with the available tools. The idea of this work is to implement a parallel uniform mesh multiplication in a HPC code developed at Barcelona Supercomputing Center named Alya. [Copyright &y& Elsevier]

Published
2013
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2. New high performance computing software for multiphysics simulations of fusion reactors.

Author

Gutierrez-Milla, Albert, Mantsinen, Mervi, Avila, Matias, Houzeaux, Guillaume, Riera-Auge, Carles, and Sáez, Xavier

Subjects
*FUSION reactors, *TOKAMAKS, *NEUTRON transport theory, *PLASMA physics, *SIMULATION methods & models
Abstract

Highlights • Presentation of Alya computational mechanics code in the fusion field. • Including a neutronics module within an HPC multiphysics framework. • First benchmark results of the neutron transport module. Abstract Integrated modelling is an important element of tokamak fusion research. It contributes to the interpretation and planning of experiments, validation of theory against experimental results, development of plasma control techniques as well as the design of next step devices. Large efforts continue to be devoted to the integrated modelling of plasma physics effects in a fusion reactor core and have led to significant progress in physics understanding, while tools to model multiphysics phenomena taking place in fusion reactor components such as tritium breeding blankets have not yet reached a similar level of detail and completeness. We are developing a new high performance computing tool for simulating the latter effects. It is based a parallel computational mechanics code Alya which is specially designed for running with high efficiency standards in large scale supercomputers and is capable of solving different physics problems in a coupled way. As first step towards multiphysics simulations of fusion reactor components, we are developing a new neutron transport module based on the deterministic approach for coupling with the existing, implemented physics modules in Alya. This module, together with existing physics implemented in Alya will allow to solve future high fidelity multiphysics and multiscale problems. We present the capabilities of the Alya system and the latest version of the new neutron transport module currently under development. [ABSTRACT FROM AUTHOR]

Published
2018
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