Migration of a particle in confined shear flow Giesekus fluids is investigated numerically with the method direct forcing/fictitious domain. We focus on migration direction for initial lateral position y0 and determination critical point yc moving towards center line or wall. The effect viscosity ratio μr, shear-thinning parameter α, Weissenberg number Wi, blocking rate β value analyzed. result...

Abstract A Hamiltonian reduction approach is defined, studied, and finally used to derive asymptotic models of internal wave propagation in density stratified fluids two-dimensional domains. Beginning with the general formalism Benjamin (1986 J. Fluid Mech. 165 445–74) for an ideal, stably Euler fluid, corresponding structure systematically reduced setup two homogeneous under gravity, separated...

Nanospheres with an internal bicontinuous structure were obtained through hierarchical self-assembly of a dendritic block terpolymer in selective solvents. The self-assembly underwent a unique three stage process involving unimolecular micelle formation, multimicelle aggregation and microphase separation within a self-confined space. Reversible phase inversion of the nanospheres in response to ...

Bad atmospheric conditions appear to be the culprit in each of these cases. The unfortunate part is that these incidents could have possibly been prevented. Had the atmosphere been monitored in these three cases alone, maybe we could have prevented the six injuries and one fatality. A person in need of help while in a tank, vessel, pit, manhole or other confined space is in a confined space res...

Simple theoretical models are presented to illustrate the effects of spatial confinement and macromolecular crowding on the equilibria and rates of protein folding and binding. Confinement is expected to significantly stabilize the folded state, but for crowding only a marginal effect on protein stability is expected. In confinement the unfolded chain is restricted to a cage but in crowding the...

In this work, the SAFT-VR Mie equation of state is used in conjunction with Dubinin-Radushkevich-Astakhov (DRA) and Steele potentials, according to Multicomponent Potential Theory Adsorption (MPTA), model thermodynamic behavior fluids confined porous media. The problem specifications are temperature, volume, number moles each component, yielding a Helmholtz energy-minimization problem. Calculat...

As a continuation of Part I, where the energy balance periodically excited confined flow was studied, in this second part numerical model is validated against experiments on vertically tank-fluid system decaying motion. In one two models, tank movement prescribed according to experimental measurements; coupled mass-spring-damper equation resembling one. Both problems were studied for different ...