Browsing by Subject "Extrudate swell"
Now showing items 1-7 of 7
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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 ...
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Article
Extrusion of a compressible Newtonian fluid with periodic inflow and slip at the wall
(1996)We explore a mechanism of extrusion instability, based on the combination of nonlinear slip and compressibility. We consider the time-dependent compressible Newtonian extrudate swell problem with slip at the wall. Steady-state ...
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Article
Numerical study of the combined effects of inertia, slip, and compressibility in extrusion of yield stress fluids
(2014)The axisymmetric extrudate swell flow of a compressible Herschel–Bulkley fluid with wall slip is solved numerically. The Papanastasiou-regularized version of the constitutive equation is employed, together with a linear ...
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Article
On the combined effects of slip, compressibility, and inertia on the Newtonian extrudate-swell flow problem
(2013)We solve both the planar and axisymmetric extrudate-swell flows of a compressible Newtonian liquid with Navier slip at the wall, using the finite-element method in space and a fully-implicit finite-difference scheme in ...
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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 ...
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Conference Object
Steady flow of a two-dimensional film under pressure
(2000)We use finite elements and the full Newton iteration method to solve the steady, two-dimensional flow of a Newtonian planar film, issuing from a slit under a pressure difference between the two free surfaces, in the presence ...
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Article
A study of various factors affecting Newtonian extrudate swell
(2012)Finite-element simulations have been undertaken for the benchmark problem of extrudate swell present in extrusion. Both cases of planar and axisymmetric domains were considered under laminar, isothermal, steady-state ...