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pro vyhledávání: '"Trias F"'
Divergence constraints are present in the governing equations of numerous physical phenomena, and they usually lead to a Poisson equation whose solution represents a bottleneck in many simulation codes. Algebraic Multigrid (AMG) is arguably the most
Externí odkaz:
http://arxiv.org/abs/2407.05930
The numerical simulation of multiphase flows presents several challenges, namely the transport of different phases within de domain and the inclusion of capillary effects. Here, these are approached by enforcing a discrete physics-compatible solution
Externí odkaz:
http://arxiv.org/abs/2110.03725
Autor:
Valle, Nicolás, Álvarez-Farré, Xavier, Gorobets, Andrey, Castro, Jesús, Oliva, Assensi, Trias, F. Xavier
The use of flux limiters is widespread within the scientific computing community to capture shock discontinuities and are of paramount importance for the temporal integration of high-speed aerodynamics, multiphase flows, and hyperbolic equations in g
Externí odkaz:
http://arxiv.org/abs/2110.03044
Autor:
Alsalti-Baldellou, Àdel, Álvarez-Farré, Xavier, Colomer, Guillem, Gorobets, Andrey, Pérez-Segarra, Carlos David, Oliva, Assensi, Trias, F. Xavier
Publikováno v:
In Computers and Fluids 15 May 2024 275
Autor:
Komen, Ed M. J., Hopman, Jannes A., Frederix, Edo M. A., Trias, F. Xavi, Verstappen, Roel W. C. P.
A new conservative symmetry-preserving second-order time-accurate PISO-based pressure-velocity coupling for solving the incompressible Navier-Stokes equations on unstructured collocated grids is presented in this paper. This new method for implicit t
Externí odkaz:
http://arxiv.org/abs/2010.03931
Publikováno v:
In Journal of Computational Physics 1 August 2023 486
This article presents a new spectral analysis approach for dispersion error and a methodology to numerically evaluate it. In practice, this new analysis allows the numerical study of dispersion errors on all types of mesh and for multiple dimensions.
Externí odkaz:
http://arxiv.org/abs/1909.07754
The computation of multiphase flows presents a subtle energetic equilibrium between potential (i.e., surface) and kinetic energies. The use of traditional interface-capturing schemes provides no control over such a dynamic balance. In the spirit of t
Externí odkaz:
http://arxiv.org/abs/1909.01114
Rotating turbulent flows form a challenging test case for large-eddy simulation (LES). We, therefore, propose and validate a new subgrid-scale (SGS) model for such flows. The proposed SGS model consists of a dissipative eddy viscosity term as well as
Externí odkaz:
http://arxiv.org/abs/1904.12748
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