Exploració per autor "Valle Marchante, Nicolás"
Ara es mostren els items 1-11 de 11
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A Projected Ghost Fluid Method for a mimetic approach for extreme contrast interfaces in multiphase flows
Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier; Castro González, Jesús; Oliva Llena, Asensio (2018)
Text en actes de congrés
Accés restringit per política de l'editorialIn the context of a multimaterial domain, the GFM for the Laplacian operator is reformulated from an algebraic perspective, where operators are represented by matrices. From this perspective, a whole new level of analysis ... -
Algebraic implementation of a flux limiter for heterogeneous computing
Valle Marchante, Nicolás; Álvarez Farré, Xavier; Trias Miquel, Francesc Xavier; Castro González, Jesús; Oliva Llena, Asensio (2018)
Text en actes de congrés
Accés restringit per política de l'editorial -
An energy-preserving level set method for multiphase flows
Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier; Castro González, Jesús (2020-01-01)
Article
Accés obertThe 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 ... -
Energy preserving multiphase flows: applications to falling films
Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier; Castro González, Jesús (2021)
Text en actes de congrés
Accés obertThe 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 ... -
Implementation of a flux-limiter into a fully-portable, algebra-based framework for heterogeneous computing
Álvarez Farré, Xavier; Valle Marchante, Nicolás; Gorobets, Andrei; Trias Miquel, Francesc Xavier (2018)
Text en actes de congrés
Accés restringit per política de l'editorialDuring the last years, there has been a signi¿cant increment in the variety of hardware to overcome the power constraint in the context of the exascale challenge. This progress is leading to an increasing hybridisation of ... -
On the conservation of primary and secondary properties in the simulation of multiphase flows
Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier; Verstappen, Roel W.C.P. (Scipedia, 2022)
Text en actes de congrés
Accés obertThe formulation of multiphase flows emanates from basic conservation laws: mass, momentum and energy. While these are embedded in the celebrated Navier-Stokes equations, none of these properties do necessarily hold when ... -
On the development of direct numerical simulations for falling films
Valle Marchante, Nicolás (Universitat Politècnica de Catalunya, 2021-01-07)
Tesi
Accés obertMultiphase flows present a rich variety of physical instabilities, which may turn into a set of interesting techonological features. In the particular case of vertical fallings films, these features provide with short ... -
On the implementation of flux limiters in algebraic frameworks
Valle Marchante, Nicolás; Álvarez Farré, Xavier; Gorobets, Andrei; Castro González, Jesús; Oliva Llena, Asensio; Trias Miquel, Francesc Xavier (2022-02-01)
Article
Accés obertThe use of flux limiters is widespread within the scientific computing community to capture shock dis- continuities and are of paramount importance for the temporal integration of high-speed aerodynamics, multiphase flows ... -
On the Interpolation Problem for the Poisson Equation on Collocated Meshes
Santos Serrano, Daniel; Muela Castro, Jordi; Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier (International Centre for Numerical Methods in Engineering (CIMNE), 2021)
Text en actes de congrés
Accés obertThe appearence of unphysical velocities in highly distorted meshes is a common problem in many simulations. In collocated meshes, this problem arises from the interpolation of the pressure gradient from faces to cells. ... -
Symmetry-preserving discretization of Navier-Stokes on unstructured grids: collocated vs staggered
Trias Miquel, Francesc Xavier; Valle Marchante, Nicolás; Gorobets, Andrei; Oliva Llena, Asensio (2021)
Text en actes de congrés
Accés obertThe essence of turbulence are the smallest scales of motion. They result from a subtle balance between convective transport and diffusive dissipation. Mathematically, these terms are governed by two differential operators ... -
Symmetry-Preserving Discretizations In Unstructured Staggered Meshes
Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier; Verstappen, R.W.C.P. (2021)
Text en actes de congrés
Accés restringit per política de l'editorialThe adoption of symmetry-preserving discretizations is presented in terms of the collocated, unstructured meshes customary of commercial codes. By adopting an algebraic approach, a discretization of the convective terms ...