Browsing by Subject "Dinàmica de fluids computacional"
Now showing items 1-20 of 199
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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 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 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 hierarchical parallel implementation for heterogeneous computing. Application to algebra-based CFD simulations on hybrid supercomputers
(Elsevier, 2021-01)
Article
Restricted access - publisher's policyThe 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
Restricted access - publisher's policyThis 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 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 numerical study of liquid atomization regimes by means of conservative level-set simulations
(Elsevier, 2019-01-30)
Article
Open AccessIn this work, a conservative level-set finite-volume solver for interface-capturing is employed to perform the direct numerical simulation of Liquid Jets discharging into a quiescent air chamber. The scope is to propose a ... -
A Projected Ghost Fluid Method for a mimetic approach for extreme contrast interfaces in multiphase flows
(2018)
Conference report
Restricted access - publisher's policyIn 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 ... -
A pseudo-DNS method for the simulation of incompressible fluid flows with instabilities at different scale
(Springer, 2020-01)
Article
Open AccessIn this work, a new model for the analysis of incompressible fluid flows with massive instabilities at different scales is presented. It relies on resolving all the instabilities at all scales without any additional model, ... -
A pure virtual approach for managing platform portability on hybrid supercomputers
(2019)
Conference report
Restricted access - publisher's policyCommonly, the development of scientific computing software follows a stencilbased approach: the numerical methods and algorithms are introduced into computing systems through stencil data structures and sweeps (i.e. ... -
A review study on the modeling of high-temperature solar thermal collector systems
(2019-09-01)
Article
Restricted access - publisher's policyConcentrated solar power technologies are gaining more attention in the last two decades in order to replace the conventional power technologies and reduce their environmental impact. Among the developed concentrating ... -
A time-average filtering technique to improve the efficiency of two-layer wall models for large eddy simulation in complex geometries
(Elsevier, 2019-06-30)
Article
Restricted access - publisher's policyTwo-Layer wall models have been recurrently studied since they represent a good physical model for Large Eddy Simulations with underresolved wall regions. Specifically, those based on the Reynolds Averaged Navier-Stokes ... -
A-posteriori error estimation for the finite point method with applications to compressible flow
(2017-04)
Article
Open AccessAn a-posteriori error estimate with application to inviscid compressible flow problems is presented. The estimate is a surrogate measure of the discretization error, obtained from an approximation to the truncation terms ... -
Active Aerodynamics applied on the Arcfox-GT Supercar
(Universitat Politècnica de Catalunya, 2019-07-23)
Bachelor thesis
Restricted access - author's decisionIn this project an aerodynamic study is developed on a supercar, integrating different aerodynamic elements from the active aerodynamics. The model where this innovating technology is applied is the ArcFox-GT, a Chinese ... -
Active flow control in aerodynamic applications.
(Universitat Politècnica de Catalunya, 2020-04)
Master thesis
Restricted access - author's decisionThe focus of this thesis is to determine the e ect of Active Flow Control ( AFC from now), studying, analyzing the behavior of airfoil and afterwards, implementing AFC and evaluate its impact on aerodynamic performance. ... -
Active flow control on SD7003 airfoil using synthetic jets
(2019)
Conference report
Restricted access - publisher's policyThe present paper focuses on applying the Active Flow Control (AFC) technology on the Selig-Donovan 7003 (SD7003) airfoil at Reynolds number 60,000, the idea is to employ synthetic jets in order to modify the lift and drag ...
