A Venturi scrubber has dispersed three-phase flow of gas, dust, and liquid. Atomization of a liquid jet and interaction between the phases has a large effect on the performance of Venturi scrubbers. In this study, a computational model for the interactive three-phase flow in a Venturi scrubber has been developed to estimate pressure drop and collection efficiency. The Eulerian-Lagrangian method...

A stochastic subgrid model for large-eddy simulation of atomizing spray is developed. Following Kolmogorov!s concept of viewing solid particle-breakup as a discrete random process, atomization of liquid blobs at high relative liquid-to-gas velocity is considered in the framework of uncorrelated breakup events, independent of the initial droplet size. Kolmogorov!s discrete model of breakup is re...

In this study, the controlled nucleation and growth of gold nanoparticles (GNPs) were investigated using a self-repelled mist in liquid chemical reaction environment. An electrospray-based reduction method was conducted aqueous region at room temperature to synthesize polymeric-stabilized nanoparticles. The electrospray technique used atomize hydrogen tetrachloraurate (III) (HAuCl4) precursor s...

Liquid droplets of water and argon surrounded by their vapor have been simulated by the molecular dynamics method. To explore the surface phenomena of clusters, each molecule is classified into 'liquid', 'surface', or 'vapor' with respect to the number of neighbor molecules. The contribution of a 'surface' molecule of the water cluster to the far infrared spectrum is almost the same as that of ...

Crystalline phases undergoing 180 ◦ orientational disorder of dipolar entities in the seed or at growing (hkl) faces will show a polar vector property described by ∞/mm symmetry. Seeds and crystals develop a bi-polar state (∞/mm), where domains related by a mirror plane m allow for a ∞m symmetry in each domain. The polarity of domains is due to energetic favorable interactions at the object-to-...

Non-uniform, AC electric fields created by coplanar electrodes patterned on a substrate are used to move and manipulate aqueous liquid masses, and to dispense very small droplets. This liquid dielectrophoretic microactuation scheme has potential applications for microfluidic systems in the laboratory on a chip. Simple, co-planar electrode strips are used to divide microlitersized, sessile water...

A simple optical deflection technique was used to monitor the vibrations of microlitre pendant droplets of deuterium oxide, formamide, and 1,1,2,2-tetrabromoethane. Droplets of different volumes of each liquid were suspended from the end of a microlitre pipette and vibrated using a small puff of nitrogen gas. A laser was passed through the droplets and the scattered light was collected using a ...

Abstract Minimum quantity lubrication (MQL) is a relatively efficient and clean alternative to flooding workpiece machining. Electrostatic atomization has the merits of small droplet diameter, high uniformity size, strong coating, hence its superiority pneumatic atomization. However, as current research hotspot, influence jet parameters electrical on average diameter droplets not clear. First, ...

A spherical conducting droplet in an alternating electric field is known to undergo shape oscillations. When the droplet is supported by a substrate, the shape is no longer a complete sphere, but shape resonances are still observed. To obtain a completely spherical droplet, some kind of levitation is needed, unless the droplet is in microgravity, and this has previously been provided by gas fil...

The dynamics of droplet formation of liquid in a piezoelectric inkjet printing process with bipolar pulse and drop-on-demand (DOD) mode is investigated in this study. Two liquids with different viscosities and surface tension coefficients; alcohol and ethylene glycol, are studied. The effects of pulse voltage on the droplet formation are also examined. A piezoelectric actuated inkjet printhead ...