Browsing by Subject "Finite elements"
Now showing items 120 of 20

Article
Annular liquid jets at high Reynolds numbers
(2003)The flow of annular liquid jets at high Reynolds numbers is analysed by means of the finite element method and the fullNewton iteration scheme. Results have been obtained for various values of the inner to the outer ...

Article
Bearing capacity in sand under eccentric and inclined loading using a bounding surface plasticity model
(2017)The bearing capacity of strip footings on sand under inclined or eccentric loading is investigated using finite element analysis. The sand behavior is simulated using a bounding surface plasticity constitutive model based ...

Article
The compressible Newtonian extrudate swell problem
(1995)We solve the compressible Newtonian extrudate swell problem in order to investigate the effect of compressiblity on the shape of the extrudate. We employ a first‐order equation of state relating the density to the pressure ...

Article
Development lengths in Newtonian Poiseuille flows with wall slip
(2016)The effect of wall slip on the development of planar and axisymmetric Newtonian Poiseuille flows is studied by means of finite element simulations. The Navier slip law is employed. i.e., it is assumed that the slip velocity ...

Conference Object
Development of confined viscoplastic flows with heterogeneous wall slip
(National Technical University of Athens, 2016)The steady, pressuredriven flow of a HerschelBulkley fluid in a channel is considered assuming that slip occurs on one wall only due to slip heterogeneities. Hence, the velocity profile is allowed to be asymmetric. The ...

Article
Flow development in compression of a finite amount of a Bingham plastic
(2007)The flow and shape evolution during the compression of a finite amount of a Bingham plastic is investigated by means of numerical simulations. The problem relates to the popular compression test used for the rheological ...

Article
Flow development in compression of a finite amount of a Bingham plastic
(2007)The flow and shape evolution during the compression of a finite amount of a Bingham plastic is investigated by means of numerical simulations. The problem relates to the popular compression test used for the rheological ...

Article
Flow instabilities of HerschelBulkley fluids
(2003)We investigate numerically the interactions of twodimensional jets of Bingham plastic and HerschelBulkley fluids with a vertical surface at a distance from the die exit. This problem simulates the early stages of filling ...

Article
Flow instabilities of HerschelBulkley fluids
(2003)We investigate numerically the interactions of twodimensional jets of Bingham plastic and HerschelBulkley fluids with a vertical surface at a distance from the die exit. This problem simulates the early stages of filling ...

Article
The integrated singular basis function method for the stick‐slip and the die‐swell problems
(1991)We further develop a new singular finite element method, the integrated singular basis function method (ISBFM), for the solution of Newtonian flow problems with stress singularities. The ISBFM is based on the direct ...

Article
Microstructurebased, multiscale modeling for the mechanical behavior of hydrated fiber networks
(2008)A multiscale formulation is derived for the mechanics of a dilute fiber network microstructure, as occurs in in vitro reconstituted collagen gels, to accommodate the deterministic solution of a uniformstress condition in ...

Article
Numerical modelling for atomicforcemicroscopybased impedance imaging
(2005)This paper is motivated by the pioneering work of O'Hayre et al. and of Kalinin and Bonnell who brought together the imaging modalities of atomic force microscopy (AFM) and electrical impedance spectroscopy. With the ...

Article
Squeeze flow of semisolid slurries
(2013)A standard method used to determine material properties of semisolid slurries is the squeeze flow experiment

Article
Squeeze flow of semisolid slurries
(2013)A standard method used to determine material properties of semisolid slurries is the squeeze flow experiment

Article
Squeeze flow of semisolid slurriesAAA
(2013)A standard method used to determine material properties of semisolid slurries is the squeeze flow experiment in which a fixed amount of material is squeezed under constant force or velocity. The relation between the force ...

Article
Squeeze flow of thixotropic semisolid slurries
(2014)An essential element for the integration of a semisolid process in the production of complex commercial components is the availability of accurate mathematical and computational tools that could describe both the rheological ...

Article
Squeeze flow of thixotropic semisolid slurries
(2014)An essential element for the integration of a semisolid process in the production of complex commercial components is the availability of accurate mathematical and computational tools that could describe both the rheological ...

Article
The steady annular extrusion of a Newtonian liquid under gravity and surface tension
(2000)The steady extrusion of a Newtonian liquid through an annular die and its development outside and away from the die are studied under the influence of gravitational and surface tension forces. The finite element method ...

Conference Object
Steady flow of a twodimensional film under pressure
(2000)We use finite elements and the full Newton iteration method to solve the steady, twodimensional flow of a Newtonian planar film, issuing from a slit under a pressure difference between the two free surfaces, in the presence ...

Article
Viscoplastic flow development in a channel with slip along one wall
(2017)The flow development of a Herschel–Bulkley fluid in a horizontal channel is considered assuming that slip occurs only on the upper wall due to slip heterogeneities. Hence, the velocity profile is allowed to be asymmetric ...