and Swirl Gas Angle on Evaporation of Hafnium Cathode in a Plasma Cutting Arc Nguyen Phi Long1, Y. Tanaka1, Y. Uesugi1, and Y. Yamaguchi2 1Division of Electrical Engineering and Computer Science, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan 2Komatsu Industries Corporation, Japan Abstract: The effects of arc current and swirl gas angle on plasma cutting arc were investigated using a dev...

The effects of swirl and vaporization on droplet dispersion are investigated in the near region of a two-phase, swirling, heated jet. Simulations are based on the numerical solution of time-dependent, axisymmetric gas-phase equations.Droplets’ trajectories are tracked byusingaLagrangianapproach.Forall of the swirl cases investigated, the droplet dispersion exhibits a nonmonotonic behavior, with...

Pollution reduction in the Conasauga River is a high priority for Georgia due to the remaining biological diversity of the Conasauga. Home to 76 native species of fish, more than the Columbia and Colorado Rivers combined, the Conasauga serves residential, agricultural, and carpet industry needs in and around Dalton. Segments of the river are impaired due to sediment, nutrients, and fecal colifo...

Background: Acute intracerebral hemorrhage (ICH) heterogeneity on NCCT, characterized by qualitative and quantitative methods, is predictive of hematoma expansion and mortality however association with the spot sign is not well-described. We sought to validate and determine the association between qualitative and quantitative hematoma heterogeneity with expansion and the spot sign, respectively...

This paper presents preliminary velocity and scalar measurements of low swirl intensity jets in air. Swirling jets were generated using a micro-injector swirl generator. Velocity fields of the jets were obtained using Multi-grid Cross Correlation Digital Particle Image Velocimetry. Initial flow visualizations were performed using planar laser induced fluorescence with acetone as tracer species.

The momentum flux ratio (MFR) significantly affects the mixing characteristics and combustion efficiency of propellants in rocket engine injectors. spray three gas-centered swirl-coaxial injectors used a full-scale test were investigated according to change ratio. difference was analyzed through comparison with results using visualization quantification. cross-sectional shape droplet distributi...

Soot concentration distribution is investigated both numerically and experimentally in methane-air diffusion flame. The experimental work is conducted with a cylindrical swirl stabilized combustor. Filter paper technique is used to measure soot volume fraction inside the combustor. The numerical simulation is based on the solution of the fully-coupled conservation equations for swirling turbule...

In this manuscript, the experimental setup was designed and fabricated for optimizing the parameters of a catalytic converter of INDICA V2 exhaust system. Three turbulence intensify devices, namely Swirl Venturi, Swirl Blades and Swirl Contour, were close-fitted before the catalytic converter. The heating element is embedded in its body and thermocouples are used for knowing the performance at ...