Browsing by Subject "Mecànica de fluids"
Now showing items 1-20 of 346
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A 3-D volume-of-fluid advection method based on cell-vertex velocities for unstructured meshes
(Elsevier, 2014-05-01)
Article
Restricted access - publisher's policyA new geometrical Volume-of-Fluid (VOF) method for capturing interfaces on three-dimensional (3-D) Cartesian and unstructured meshes is introduced. The method reconstructs interfaces as first- and second-order piecewise ... -
A 3D low-order panel method for unsteady aerodynamic problems
(2010)
Research report
Open AccessAn unsteady low-order panel method for three-dimensional subsonic analyses is presented. The method, which is based on well-established techniques in computational aerodynamics, is intended to achieve a cost-effective ... -
A conservative overlap method for multi-block parallelization of compact finite-volume schemes
(Elsevier, 2017-12)
Article
Open AccessA conservative approach for MPI-based parallelization of tridiagonal compact schemes is developed in the context of multi-block finite-volume methods. For each block, an enlarged linear system is solved by overlapping a ... -
A FEM-DEM technique for studying the motion of particles in non-Newtonian fluids: application to the transport of drill cuttings in wellbores
(Springer, 2015-11)
Article
Open AccessWe present a procedure for coupling the finite element method (FEM) and the discrete element method (DEM) for analysis of the motion of particles in non-Newtonian fluids. Particles are assumed to be spherical and immersed ... -
A finite-volume/level-set interface capturing method for unstructured grids: Simulations of bubbles rising through viscous liquids
(WIT Press, 2014)
Conference report
Open AccessA numerical method is developed for simulating two-phase flows with moving inter-phase boundaries, which is integrated in a finite-volume framework on collocated unstructured grids of arbitrary element type. The location, ... -
A level-set aided single-phase model for the numerical simulation of free-surface flow on unstructured meshes
(Elsevier, 2016-11-25)
Article
Open AccessA new single-phase scheme for the numerical simulation of free-surface problems on 3-D unstructured meshes is presented. The flow field is obtained from the discrete solution of the incompressible Navier-Stokes equations, ... -
A mechanism for streamwise localisation of nonlinear waves in shear flows
(2015-09-01)
Article
Open AccessWe present the complete unfolding of streamwise localisation in a paradigm of extended shear flows, namely two-dimensional plane Poiseuille flow. Exact solutions of the Navier-Stokes equations are computed numerically and ... -
A novel fabrication technique to minimize poly(dimethylsiloxane)-microchannels deformation under high-pressure operation
(2013-10-27)
Article
Restricted access - publisher's policyPDMS is one of the most common materials used for the flow delivery in the microfluidics chips, since it is clear, inert, nontoxic, and nonflammable. Its inexpensiveness, straightforward fabrication, and biological ... -
A numerical method for computing unstable quasi-periodic solutions for the 2-D Poiseuille flow
(1999)
Article
Open Access -
A physical mechanism of TANGO1-mediated bulky cargo export
(2020-11-10)
Article
Open AccessThe endoplasmic reticulum (ER)-resident protein TANGO1 assembles into a ring around ER exit sites (ERES), and links procollagens in the ER lumen to COPII machinery, tethers, and ER-Golgi intermediate compartment (ERGIC) ... -
A power flow analysis of a double-deck circular tunnel embedded in a full-space
(2014-02)
Article
Restricted access - publisher's policyThe purpose of the present investigation is to obtain the mean power flow radiated by a double-deck circular tunnel and compares it to the one radiated by a simple circular tunnel. To achieve this, a harmonic line load is ... -
A review of dynamic models and stability analysis for a hydro-turbine governing system
(2021-07)
Article
Open AccessHydropower offers highly flexible, low-carbon generation that can be used to balance electricity grids with high levels of wind and solar penetration. This will become increasingly important as the energy transition unfolds. ... -
A review of pzt patches applications in submerged systems
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-07-12)
Article
Open AccessSubmerged systems are found in many engineering, biological, and medicinal applications. For such systems, due to the particular environmental conditions and working medium, the research on the mechanical and structural ... -
A second-order semi-lagrangian particle finite element method for fluid flows
(Springer, 2019-01-01)
Article
Open AccessIn this paper, a second-order SL-PFEM scheme for solving the incompressible Navier–Stokes equations is presented. This scheme is based on the second-order velocity Verlet algorithm, which uses an explicit integration for ... -
A theoretical and experimental study of horizontal air-water two-phase flow with a spool piece
(Universitat Politècnica de Catalunya / Politecnico di Torino, 2010)
Master thesis (pre-Bologna period)
Open AccessDesarrollo de instrumentación especializada y desarrollo de algoritmos especiales capaces de interpertar las señales de medida del flujo bifásico. Combinaciones de diferentes instrumentos (Spool Piece) serán analizados y ... -
A theoretical and experimental study of horizontal air-water. Two-phase flow with a spool piece
(Universitat Politècnica de Catalunya / Politecnico di Torino, 2010)
Master thesis (pre-Bologna period)
Open AccessThis Master Thesis has been carried out by Luis Mora Vallejo and Jacobo Zegrí Reiriz. We are both two Spanish students who are studying Engineering in the Universitat Politècnica de Catalunya (UPC) in the engineer‟s school ... -
Active flow control of airfoils via multi-sweeping jets at ultra low Reynolds numbers
(Universitat Politècnica de Catalunya, 2023-07-13)
Master thesis
Open AccessThe primary focus is on implementing multiple sweeping jets to eliminate the requirement for high-lift equipment with mechanical components, which are at risk for mechanical failures and increase weight due to redundant ... -
Adaptive breakwaters with inflatable elements for coastal protection. Preliminary numerical estimation of their performance
(2022-05)
Article
Open AccessExcessive erosion of sand beaches defines a serious problem worldwide and is particularly pronounced in the Mediterranean region. One of the typical mea- sures for alleviating this erosion consists in building rigid ... -
Adaptive finite element computations of hypersonic inviscid flows around a doubel ellipsoid
(1995)
Research report
Open AccessThis report documents the potential capabilities of adaptive inviscid flow calculations on unstructured meshes in three dimensions using the finite element method. The finite element formulation of the compressible Euler ... -
Advances in the simulation of multi-fluid flows with the Particle Finite Element Method: application to bubble dynamics
(2010)
Research report
Open AccessIn this work we extend the Particle Finite Element Method (PFEM) to multi-fluid flow problems with the aim of exploiting the fact that Lagrangian methods are specially well suited for tracking interfaces. We develop a ...
