Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Giacomini, Matteo"'
We propose an efficient algorithm that combines overlapping domain decomposition and proper generalized decomposition (PGD) to construct surrogate models of linear elliptic parametric problems. The technique is composed of an offline and an online ph
Externí odkaz:
http://arxiv.org/abs/2409.08401
Publikováno v:
Computers and Fluids, 279:106339, 2024
This work develops, for the first time, a face-centred finite volume (FCFV) solver for the simulation of laminar and turbulent viscous incompressible flows. The formulation relies on the Reynolds-averaged Navier-Stokes (RANS) equations coupled with t
Externí odkaz:
http://arxiv.org/abs/2403.01496
A posteriori reduced-order models (ROM), e.g. based on proper orthogonal decomposition (POD), are essential to affordably tackle realistic parametric problems. They rely on a trustful training set, that is a family of full-order solutions (snapshots)
Externí odkaz:
http://arxiv.org/abs/2312.14756
Publikováno v:
Journal of Computational Physics, 512, 113143 (2024)
A high-order, degree-adaptive hybridizable discontinuous Galerkin (HDG) method is presented for two-fluid incompressible Stokes flows, with boundaries and interfaces described using NURBS. The NURBS curves are embedded in a fixed Cartesian grid, yiel
Externí odkaz:
http://arxiv.org/abs/2312.14328
Publikováno v:
Computer Methods in Applied Mechanics and Engineering, 418, 116484 (2024)
A non-intrusive proper generalized decomposition (PGD) strategy, coupled with an overlapping domain decomposition (DD) method, is proposed to efficiently construct surrogate models of parametric linear elliptic problems. A parametric multi-domain for
Externí odkaz:
http://arxiv.org/abs/2307.16334
Publikováno v:
International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 33, Issue 6, pp. 2198-2231, 2023
Purpose: This study aims to assess the robustness and accuracy of the face-centred finite volume (FCFV) method for the simulation of compressible laminar flows in different regimes, using numerical benchmarks. Design/methodology/approach: The work pr
Externí odkaz:
http://arxiv.org/abs/2208.02848
Publikováno v:
In Journal of Computational Physics 1 September 2024 512
Autor:
Giacomini, Matteo, Perotto, Simona
Publikováno v:
Computers & Mathematics with Applications, 121, 1--17 (2022)
A finite element-based image segmentation strategy enhanced by an anisotropic mesh adaptation procedure is presented. The methodology relies on a split Bregman algorithm for the minimisation of a region-based energy functional and on an anisotropic r
Externí odkaz:
http://arxiv.org/abs/2112.10138
Autor:
Di Giusto, Thomas B.J., Lee, Chun Hean, Gil, Antonio J., Bonet, Javier, Wood, Clare, Giacomini, Matteo
Publikováno v:
In Journal of Computational Physics 1 December 2024 518
Publikováno v:
In Computer Methods in Applied Mechanics and Engineering 1 January 2024 418 Part A