The efficient removal of material debris by flushing is critical for the performance and surface quality electrical discharge machining (EDM) manufacturing process. particle concentration alters thermal, mechanical, properties particle–dielectricum suspension affects process inducing high thermal loads. For first time, we perform a direct particle–fluid simulation cycle in generic EDM cavity us...

suspension polymerization processes are significantly important in polymer bead formation. one of the important factors for bead size control in these processes is variation in surface tension. in this research, the prediction of optimum concentration of a surface active agent was investigated on the basis of the experimental surface tension diagrams. the experimental data show that the desired...

The objective of this study is to understand the dynamics freely evolving particle suspensions over a wide range particle-to-fluid density ratios. are characterized by average momentum equation, where dominant contribution transfer between particles and fluid drag force. In study, force quantified using particle-resolved direct numerical simulation in canonical problem: statistically homogeneou...

We describe an immersed boundary method in which the fluid–structure coupling is achieved Eulerian framework. The improved extension of originally developed by Kajishima et al. (2001), accounts for inertia fictitious fluid inside particle volume and thus able to reproduce behavior particles both case neutrally-buoyant objects presence density difference between fluid. capable handle multiple su...

Hard spheres in Newtonian fluids serve as paradigms for nonNewtonian materials phenomena exhibited by colloidal suspensions. A recent experimental study (Cheng et al. Science 2011, 333, 1276) showed that upon application of shear to such a system the particles form string-like structures aligned in the vorticity direction. We explore the mechanism underlying this outof-equilibrium organization ...

coarse product in the underflow. It is well known that injecting water in the conical part of the cyclone reduces the fine particle fraction in the underflow. This paper presents a mathematical model that simulates the water injection in the conical component. The model accounts for the fluid flow and the particle motion. Particle interaction, due to hindered settling caused by increased densit...

Colloidal suspensions exhibit shear thinning and shear thickening. The most common interpretation of these phenomena identifies layering of the fluid perpendicular to the shear gradient as the driver for the observed behavior. However, studies of the particle configurations associated with shear thinning and thickening cast doubt on that conclusion and leave unsettled whether these nonequilibri...

Despite extensive studies on either smooth granular-fluid flow or the solid-like deformation at slow limit, change between these two extremes remains largely unexplored. By systematically investigating fluctuations of tightly packed grains under steady shearing, we identify a transition zone with prominent stick-slip avalanches. We establish state diagram, and propose new dimensionless shear ra...