Shear-Induced Migration of Rigid Particles near an Interface between a Newtonian and a Viscoelastic Fluid

Homogenized Non-Newtonian Viscoelastic Rheology of a Suspension of Interacting Particles in a Viscous Newtonian Fluid

Our study is motivated by an attempt to develop a rigorous mathematical model of a suspension highly filled with a large number of small solid particles, which interact due to surface forces. We use asymptotic analysis in the small parameter , and consider irregular (nonperiodic) geometries for which the sizes of particles and the distances between them are of order . We present conditions unde...

Interactions between Particles at a Fluid Interface

the investigation of the relationship between type a and type b personalities and quality of translation

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A computational study of the coalescence between a drop and an interface in Newtonian and viscoelastic fluids

A drop falling onto a fluid-fluid interface may not merge with it at once but may undergo a so-called partial coalescence cascade. Experimental observations of this phenomenon have revealed fascinating features of the process for Newtonian as well as polymeric fluids. In this paper, we describe numerical simulations of partial coalescence based on a phase-field method. Results show that partial...

Migration of rigid spheres in a two-dimensional unidirectional shear flow of a second-order fluid

The lateral migration of a neutrally buoyant rigid sphere suspended in a secondorder fluid is studied theoretically for unidirectional two-dimensional flows. The results demonstrate the existence of migration induced by normal stresses whenever there is a lateral variation of the shear rate in the undisturbed flow. The migration occurs in the direction of decreasing absolute shear rate, which i...