We present special numerical techniques for viscoelastic fluid flow utilizing a fully coupled monolithic multigrid finite element approach with consistent edge-oriented stabilization technique. The governing equations arise from the Navier-Stokes equations for the Oldroyd-B type of fluid with the help of the log-conformation reformulation (”Kupferman’s trick”) to allow a wide range of Weissenbe...

This study investigates the numerical solution of viscoelastic flows using two contrasting high-order finite volume schemes. We extend our earlier work for Poiseuille flow in a planar channel and the single equation form of the extended pom-pom (SXPP) model [1], to determine steady-state solutions for planar 4:1 sharp contraction flows. The numerical techniques employed are time-stepping algori...

The turbulence of a realistic dilute solution DNA macromolecules is investigated through hybrid Eulerian–Lagrangian approach that directly solves the incompressible Navier–Stokes equation alongside evolution 108 polymers, modelled as finitely extensible nonlinear elastic (FENE) dumbbells. At friction Reynolds number 320 and Weissenberg 2×104, drag reduction equal to 26%, which similar one obtai...

This work presents a numerical technique for simulating incompressible, isothermal, viscoelastic flows of fluids governed by the upper-convected Maxwell (UCM) and K–BKZ (Kaye–Bernstein, Kearsley and Zapas) integral models. The numerical technique described herein is an extension of the GENSMAC method to the solution of the momentum and mass conservation equations to include integral constitutiv...

Hydrodynamic and viscoelastic interactions between the turbulent fluid within a channel at [Formula: see text] polymeric phase are investigated numerically using multiscale hybrid approach. Direct numerical simulations performed to predict continuous Brownian dynamics finitely extensible nonlinear elastic dumbbell approach carried out model trajectories of polymer extension vectors flow, parall...

We present the full three-dimensional numerical investigation of von Karman swirling flow between two parallel plates using Oldroyd-B model and characterize onset development elastic turbulence. quantify state with secondary-flow strength, a measure average strength velocity fluctuations, then define an order parameter as time strength. The displays subcritical transition from laminar to bistab...

When two fluids of different electrical conductivities are transported side by in a microfluidic device under the influence an electric field, electrokinetic instability (EKI) is often generated after some critical values applied field strength and conductivity ratio. Many prior experimental numerical studies show that this phenomenon results chaotic flow inside microdevice, thereby facilitatin...

A backwards-tracking Lagrangian–Eulerian method is used to simulate planar viscoelastic squeeze flow. The momentum and continuity equations are discretized with the finite volume implicit immersed boundary conditions describe objects in domain. flow, which involves moving solid geometry as well free surface chosen for its relevance industrial applications, such adhesive parts assembly hemming. ...

Heat transfer phenomena are used in a variety of industries, including chemical devices, shipbuilding, power plants, electronic and medicinal plants. Propylene glycol, engine oil, water, ethylene glycol common single-phase heat liquids process industries thermal Therefore, the authors interested investigating magnetohydrodynamic flow water-based hybrid nanofluid containing ferrous graphene oxid...