Simulation of impulsively induced viscoelastic jets using the Oldroyd-B model

Abstract

Abstract

A phase diagram of the pinch-off-type behavior of impulsively-induced viscoelastic liquid jets

“…To understand this phenomenon, we model a jet using a viscoelastic model following previous studies (McIlroy et al, 2013;Hoath et al, 2012). The effect of elasticity on the jet behavior can be evaluated by introducing a constitutive equation that accounts for elastic stress (Turkoz et al, 2021). There are various models, but here we use the finitely extensible non-linear elastic dumbbell model with the Chilcott-Rallison closure approximation, known as the FENE-CR model (Chilcott and Rallison, 1988).…”

Effect of initial conditions on promotion and inhibition of breakup during filament contraction

“…Filaments in many applications are not simple Newtonian fluids and/or have clean interfaces. Therefore, it would be highly worthwhile to study the effect of an initial velocity profile on the contraction dynamics of viscoelastic, [42][43][44] surfactant-covered, [45][46][47][48] and particle-laden 49,50 fluids. The analyses and results of this article ought to be generalized to account for more complex initial conditions including nonlinear initial velocity profiles as well as asymmetry in filament shapes.…”

Flow regimes of a single pulse of inelastic and elastic liquids from a round capillary tube

“…More recently, additional studies confirm there is still more to be learned from the breakup of non-Newtonian fluid jets. For instance, the scaling laws regarding the maximum extensibility of viscoelastic threads are not yet fully understood [12].…”