Zobrazeno 1 - 10
of 63
pro vyhledávání: '"F. X. Trias"'
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
The present article presents a new analysis for the dispersion error and the methodology to evaluate it numerically. Here we present the spectral properties of several convective schemes, including non-linear ones, on Cartesian stretched grids for li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be34b759e3e3dd363206651895798d76
https://hdl.handle.net/2117/366824
https://hdl.handle.net/2117/366824
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
In this work, we aim to shed light to the following research question: can we find a nonlinear tensorial subgrid-scale (SGS) heat flux model with good physical and numerical properties, such that we can obtain satisfactory predic- tions for buoyancy-
Publikováno v:
Journal of Fluid Mechanics. 863:341-363
Backward-facing step (BFS) constitutes a canonical configuration to study wall-bounded flows subject to massive expansions produced by abrupt changes in geometry. Recirculation flow regions are common in this type of flow, driving the separated flow
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
The sparse matrix-vector product is a widespread operation amongst the scientific computing community. It represents the dominant computational cost in many large-scale simulations relying on iterative methods, and its performance is sensitive to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35759b34c0ba7820ee8883e2db184dcb
https://www.scipedia.com/public/Alvarez-Farre_et_al_2021a
https://www.scipedia.com/public/Alvarez-Farre_et_al_2021a
Publikováno v:
14th WCCM-ECCOMAS Congress
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
World Congress on Computational Mechanics (WCCM)
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
World Congress on Computational Mechanics (WCCM)
The incompressible Navier-Stokes equations stand as the best mathematical model for turbulent flows. However, direct numerical simulations at high Reynolds numbers are not yet feasible because the convective term produces far too many relevant scales
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3362199b31edd7394e63828ebe8a9b90
https://www.scipedia.com/public/Folch_et_al_2021a
https://www.scipedia.com/public/Folch_et_al_2021a
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
In this work, we study the accuracy of CFD-based data-driven models, which predict comfort-related flow parameters in a ventilated cavity with a heated floor. We compare the computational cost and accuracy of three different models, namely artificial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19d4817527c6709fb6f386db265e289b
http://hdl.handle.net/2117/358167
http://hdl.handle.net/2117/358167
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Computers and Fluids, 225:104979. PERGAMON-ELSEVIER SCIENCE LTD
Universitat Politècnica de Catalunya (UPC)
Computers and Fluids, 225:104979. PERGAMON-ELSEVIER SCIENCE LTD
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28fce00787ac5d1a596dc63c8421d818
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
In this work, we aim to shed light to the following research question: can we find a nonlinear tensorial subgrid-scale (SGS) heat flux model with good physical and numerical properties, such that we can obtain satisfactory predictions for buoyancy-dr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23e0b8cc2cea5611dfc42e40b6cf35d7
https://hdl.handle.net/2117/367925
https://hdl.handle.net/2117/367925
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
It is well known that the solution by means of iterative methods of very ill-conditioned systems leads to very poor convergence rates. In this context, preconditioning becomes crucial in order to modify the spectrum of the system being solved and imp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87987702693e2b0b0e0770752f9aeb82
http://hdl.handle.net/2117/357841
http://hdl.handle.net/2117/357841
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
The 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 differing in symmetry: the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::316c1d245f91c6cd896a584666787df4