We study the dynamics and arrest of two coalescing sessile yield-stress drops. Surprisingly, we find that height bridge evolves similar to a Newtonian fluid. The arrested final coalesced shape is described by balance between capillary pressure yield stress, which predicted from viscoplastic lubrication theory.

We have proposed diffusion-type flow control as a solution for the extremely time-sensitive flow control required for high-speed networks. In our method of flow control, we design in advance simple and appropriate rules for action at the nodes, and these automatically result in stable and efficient network-wide performance through local interactions between nodes. Specifically, we design the ru...

This work deals with the numerical modeling of spillage and debris floods as Newtonian viscoplastic Bingham flows free surface using mixed stabilized finite elements. The main objective is determination location flow. A velocity/pressure element formulation used Orthogonal Subgrid Scale stabilization (OSS) Split (Split-OSS) techniques enable equal order interpolation for velocity pressure. doub...

a rightcephalic vein cannulation was performed in a patienj scheduled/or elective craniectomy in order to keep a constant record ofthe intra-operative fluid volume. the flow ofthefluid through catheter was sluggish. the catheter was cautiously and gingerly withdrawn after an x...,.ay report con/innedknotting at the distal end. we believe that a chest radiograph is mandatory to rule out catheter...

Constitutive equations for the multiaxial stress-strain behavior of aluminum alloy 5754 sheets were developed, based on crystal plasticity. A Taylor-based polycrystal plasticity model, a tangent formulation of the self-consistent viscoplastic model (VPSC), and an N-site viscoplastic model based on the fast Fourier transform (VPFFT) were used to fit a single slip system hardening law to the avai...

Abstract Determination of earth pressures is one the fundamental tasks in geotechnical engineering. Although many different methods have been utilized to present passive pressure coefficients, influence non-associated plasticity on problem has not discussed intensively. In this study, finite-element limit analysis and displacement are applied for frictional materials. Results compared with sele...

Solder materials are critical packaging compounds and due to usually weakest melting temperature among packaging constitutive materials, thus, they are frequently subjected to a multitude of physical phenomena: creep, fatigue and combined hardening effects. The complexity and interaction of such factors must be considered in suitable way in the mechanical behavior modeling using the appropriate...

In this paper we study a start-up shear flow of recently proposed model shear-thinning fluid that mimics the response class viscoplastic materials, namely between parallel plates, one which is fixed and other started impulsively. simple flows while generalized viscosity blows up, stress yet finite thus able to mimic fluids. The analytical solution velocity profile obtained using semi-inverse ap...

We use the bailout embeddings of three-dimensional volume-preserving maps to study qualitatively the dynamics of small spherical neutrally buoyant impurities suspended in a time-periodic incompressible fluid flow. The accumulation of impurities in tubular vortical structures, the detachment of particles from fluid trajectories near hyperbolic invariant lines, and the formation of nontrivial thr...