Browsing by Subject "Dinàmica de fluids computacional"
Now showing items 1-20 of 446
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205-00718 study for the computational resolution of conservation equations of mass, momentum and energy: possible application to different aeronautical and industrial engineering problems, case 60A
(Universitat Politècnica de Catalunya, 2020-09)
Bachelor thesis
Open Access -
3D fluid dynamic study of anaerobic digesters (non-Newtonian case)
(Universitat Politècnica de Catalunya, 2023-07-12)
Bachelor thesis
Open AccessThis thesis presents a fluid dynamics study, carried out with OpenFoam, of the anaerobic digester of sludge from the Manresa Wastewater Treatment Plant. Two-dimensional and three-dimensional geometries are studied, taking ... -
A 0D approach fot extended operational modeling of air ejectors in thermal systems
(Begell House, 2023)
Conference report
Restricted access - publisher's policyClassic ejector models work accurately only in normal operating conditions, i.e. when the primary flow is in supercritical conditions. Moreover, they do not take into account abnormal situations, such as when the primary ... -
A 3D numerical study of the bubble generation process into a bubble T-junction generator and its comparison with experimental data: part I
(2016)
Conference report
Open AccessThis work presents a 3D numerical study of the bubble generation process into a bubble generator obtained with the commercial Computational Fluid Dynamics solver ANSYS Fluent v15.0.7, and its comparison with experimental ... -
A CFD-based surrogate model for predicting flow parameters in a ventilated room using sensor readings
(2022-07-01)
Article
Open AccessIn this work, we develop a computational fluid dynamics (CFD)-based surrogate model, which predicts flow parameters under different geometrical configurations and boundary conditions in a benchmark case of a mechanically ... -
A Chimera method for the incompressible Navier-Stokes equations
(2014-05-30)
Article
Restricted access - publisher's policyThe Chimera method was developed three decades ago as a meshing simplification tool. Different components are meshed independently and then glued together using a domain decomposition technique to couple the equations ... -
A computational fluid dynamics study on hemodynamics for different locations of the distal anastomosis of a bypass nearby a collateral vessel in the femoropopliteal area
(John Wiley & Sons, Ltd, 2014-06-24)
Article
Restricted access - publisher's policyRevascularization of the femoropopliteal sector is often performed by the placement of a bypass. In this paper, we have studied the effects of hemodynamics on patency of the bypass for different positions of the distal ... -
A contribution to adaptive numerical solution of compressible flow problems
(International Centre for Numerical Methods in Engineering (CIMNE), 1996)
Book
Open AccessThe monograph presents recent developments on the solution of high speed compressible flow problems using finite element and finite point (meshless) methods with adaptive refinement, techniques. This work treats two of the ... -
A coupled LSVOF-adaptive mesh refinement-moving mesh technique to study complex multiphase problems
(Begell House, 2023)
Conference lecture
Restricted access - publisher's policyThe Piecewise-Linear-Interface-Calculation (PLIC) reconstruction algorithm in the Volume-of-Fluid (VOF) method is widely used in numerical simulations of interfacial flows across various fields. However, a significant ... -
A coupled volume-of-fluid/level-set method for simulation of two-phase flows in unstructured meshes
(Elsevier, 2016-01)
Article
Open AccessThis paper presents a methodology for simulation of two-phase flows with surface tension in the framework of unstructured meshes, which combines volume-of-fluid with level-set methods. While the volume-of-fluid transport ... -
A finite point method for compressible flow
(John Wiley & sons, 2002-03)
Article
Open AccessA weighted least squares finite point method for compressible flow is formulated. Starting from a global cloud of points, local clouds are constructed using a Delaunay technique with a series of tests for the quality of ... -
A General Method to Compute Numerical Dispersion Error
(2021)
Conference report
Open AccessThis article presents a new methodology to compute numerical dispersion error. The analysis here presented is not restricted to uniform structured meshes nor linear discrete operators as it does not rely on sinusoids to ... -
A hierarchical parallel implementation for heterogeneous computing. Application to algebra-based CFD simulations on hybrid supercomputers
(Elsevier, 2021-01)
Article
Open AccessThe quest for new portable implementations of simulation algorithms is motivated by the increasing variety of computing architectures. Moreover, the hybridization of high-performance computing systems imposes additional ... -
A load balancing method for parallel genetic CFD optimizations
(2015)
Conference report
Restricted access - publisher's policyCFD optimizations are characterized by long and highly variable objective function evaluation times. The aim of this study is to improve the parallel performance using a new load balancing master-worker parallelization ... -
A modified Finite Element formulation for the imposition of the slip boundary condition over embedded volumeless geometries
(2019-08)
Article
Open AccessThis work describes a novel formulation for the simulation of Navier–Stokes problems including embedded objects. The new proposal is based on the use of a modified finite element space, which replaces the standard one ... -
A modified lattice Boltzmann approach based on radial basis function approximation for the non-uniform rectangular mesh
(2024-11)
Article
Restricted access - publisher's policyWe have presented a novel lattice Boltzmann approach for the non-uniform rectangular mesh based on the radial basis function approximation (RBF-LBM). The non-uniform rectangular mesh is a good option for local grid refinement, ... -
A multi-method approach towards understanding the pathophysiology of aortic dissections – the complementary role of in-silico, in-vitro and in-vivo information
(Springer, 2010)
Part of book or chapter of book
Restricted access - publisher's policyManagement and follow-up of chronic aortic dissections continues to be a clinical challenge due to progressive aortic dilatation. To predict dilatation, guidelines suggest follow-up of the aortic diameter. However, dilatation ... -
A new general method to compute dispersion errors on Cartesian stretched meshes for both linear and non-linear operators
(2022-02-01)
Article
Restricted access - publisher's policyThe 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 ... -
A numerical aerodynamic analysis on the effect of rear underbody diffusers on road cars
(Multidisciplinary Digital Publishing Institute, 2022-04-01)
Article
Open AccessThe aerodynamic complexity of the underbody surfaces of conventional road vehicles is a matter of fact. Currently available literature is focused mainly on very simple Ahmed-body geometries as opposed to realistic car ... -
A numerical set-up for the simulation of infection probability from SARS- CoV-2 in public transport vehicles
(Scipedia, 2022)
Conference report
Open AccessIn this work, a numerical framework aimed at simulating the transport of contaminants and infectious agents within a closed domain is presented. The method employs mature CFD algorithms to calculate air fields with reasonable ...
