We consider the effect of water spray configuration on fineness and uniformity a metal powder produced by atomization melt stream. The effects travel distance, nozzle design, pressure, superheat, apex angle particle size distribution is studied via laboratory-scale atomizer; main focus first two, which are usually fixed parameters atomizer. Correlations proposed relating mass median standard deviation to cited. Similar correlations for have been reported elsewhere; we present data these...

The dynamic behavior and disintegration mechanisms of a fan liquid sheet in quiescent atmosphere are investigated over broad range differential injection pressures up to Δp≈70 bar through experiments, proper orthogonal decomposition (POD) spectral analyses, linear stability analysis (LSA). By sheet, we mean diverging attenuating stream emanating from flat nozzle with high velocity. High spatiotemporal resolution backlit images reveal the formation-growth-fragmentation process bag-like...

Abstract In this article, mixed convection heat transfer is numerically studied in a vertical eccentric annulus. For purpose, full Navier-Stokes equations along with energy are solved 3-D orthogonal grid using bipolar cylindrical coordinate system and finite-volume method based on the SIMPLE algorithm. To investigate flow presence of gravity, inner wall annulus kept at constant temperature while outer assumed to be insulated. The effect different governing nondimensional parameters...

As CO 2 emissions continue to rise and the demands for electric vehicles energy storage grow, efforts need be made produce higher performing lithium ion batteries (LIBs). Therefore, it is critical improve performance of anode materials. Graphite has gained recognition as most popular commercial LIBs due its low cost, toxicity cycle stability. However, there are a number disadvantages with graphite, such limited capacity, which hinders further LIB development. result, silicon emerged...

We present the numerical investigation of Rayleigh‐Benard convection (RBC) in a slot whose bottom wall is subject to long‐wavelength heating and upper isothermal. It shown that multiple flow structures associated with same conditions can be produced by changing history heating; this controlled using different initialization conditions, continuation strategies parameters space as well solvers. The observed categorized into two generic groups, i.e. symmetric asymmetric structures.

In water atomization, a molten metal stream is fragmented by high-pressure sprays means of momentum transfer. this work, flat fan spray considered as two-phase flow: and surrounding gas. An existing mathematical model for predicting the velocities droplets entrained gas in improved. The total flux calculated different travel distances, pressures spreading angles, addressing dependence on these parameters. A new quantity, ‘effective flux’, introduced which also accounts effect apex...

The application of grooved couplings in underground paste pipelines is increasing as the mines go deeper and pressure pipeline systems gets higher. This type connection offers fast installation, convenient maintenance, allows for easier rotation backfill pipelines. There are two common types with different applications: rigid flexible. Rigid utilise a single groove on each side to hold line together, normally used low pressure. Rigid provide joint that no angular deflection or linear...

Bifurcation of the numerical solution for a system nonlinear equations describing industrial process dray slag atomization is presented. In dry atomization, stream molten disintegrated by impingement high speed jet air, resulting in spray droplets. The main output Sauter mean diameter One-parameter bifurcation diagrams are generated two operating parameters, liquid and air flowrates. both cases, solutions exist equations. At least one corresponds to stable steady state system. other can be...

In-situ Fe-TiC metal matrix composite (MMC) was successfully fabricated via Laser Powder Bed Fusion (L- PBF) using an in-house gas atomized powder. The optimization campaign of printing parameters targeted the maximum density printed cubic samples. highest Archimedes 7.615 g cm−3 achieved by laser power 210 W, scan speed 763 mm s−1, and hatch spacing 80 μm corresponding to a volume energy (VED) 68.78 J mm−3 given constant layer thickness 50 μm. relative optimized sample also measured...