Results 21 to 30 of about 2,076,992 (352)

Investigation of Spatter Trajectories in an SLM Build Chamber under Argon Gas Flow

open access: yesMetals, 2022
Spatter particles ejected from the melt pool during selective laser melting processes can get redeposited on the build plate region and impact final part quality.
Awad B. S. Alquaity, Bekir S. Yilbas
doaj   +1 more source

Atomization Characteristics of Special-Design Pneumatic Two-Fluid Nozzles for Helicopter Main Reducers: A Numerical and Experimental Investigation

open access: yesAerospace, 2022
Oil mist lubrication can be utilized as an emergency lubrication system in the main reducer of a helicopter. A special-design pneumatic two-fluid nozzle is the crucial system component for atomizing lubricant oil, so exploring the atomization ...
He Liu, Huiyun Cheng, Yu Dai, Xiang Zhu
doaj   +1 more source

Numerical analysis and experimental validation of hydrodynamics of a thin bubbling fluidized bed for various particle-size distributions using a three-dimensional dense discrete phase model

open access: yesParticuology, 2020
A dense discrete phase model combined with the kinetic theory of granular flows was used to study the bubbling characteristics and segregation of poly-dispersed particle mixtures in a thin fluidized bed.
Abolhasan Hashemisohi   +3 more
semanticscholar   +1 more source

A high-fidelity simulation of the primary breakup within suspension high velocity oxy fuel thermal spray using a coupled volume of fluid and discrete phase model

open access: yesInternational Journal of Multiphase Flow, 2020
In the suspension high velocity oxy fuel (SHVOF) thermal spray, a suspension is injected into the combustion chamber where the jet undergoes primary and secondary breakup.
S. Chadha   +2 more
semanticscholar   +1 more source

The Growth and Evolution of Biomass Soot in Partial Oxidation-Assisted Hot Gas Filtration

open access: yesEnergies, 2023
At present, partial oxidation is applied in the filtration processes of biomass hot gas to aid in solving the blockage problems caused by tar and dust condensates. However, in the resulting high-temperature and oxygen-limited environment, the risk of tar
Lin Tian, Zixuan Jin, Wenran Gao
doaj   +1 more source

Performance analysis of rectangular SIT (sediment invert trap) for stormwater drainage system

open access: yesJournal of Hydrology and Hydromechanics, 2022
Deposition of solid particles in the stormwater sewers reduces the discharging capacity, causing inundation. A sediment invert trap (SIT) is an option that can be installed at the bottom of the stormwater sewer drain to intercept the flowing solid ...
Beg Salman, Kaushal Deo Raj
doaj   +1 more source

Dust Dispersion Characteristics of Open Stockpiles and the Scale of Dust Suppression Shed

open access: yesApplied Sciences, 2022
The storage of bulk materials in open yards can easily lead to contamination in the form of suspended particles. The creation of enclosed spaces for open yards is an effective measure to stop the dispersion of dust to the outside.
Weiwu Ma   +5 more
doaj   +1 more source

Numerical Discretization of Variational Phase Field Model for Phase Transitions in Ferroelectric Thin Films [PDF]

open access: yesCommunications in Computational Physics, 2021
Phase field methods have been widely used to study phase transitions and polarization switching in ferroelectric thin films. In this paper, we develop an efficient numerical scheme for the variational phase field model based on variational forms of the electrostatic energy and the relaxation dynamics of the polarization vector.
Li, Ruotai, Du, Qiang, Zhang, Lei
openaire   +2 more sources

The effect of the Caputo fractional difference operator on a new discrete COVID-19 model

open access: yesResults in Physics, 2022
This study aims to generalize the discrete integer-order SEIR model to obtain the novel discrete fractional-order SEIR model of COVID-19 and study its dynamic characteristics.
Abderrahmane Abbes   +3 more
doaj   +1 more source

The Operation of a Three-Bladed Horizontal Axis Wind Turbine under Hailstorm Conditions—A Computational Study Focused on Aerodynamic Performance

open access: yesInventions, 2021
The aim of this study is the aerodynamic degradation of a three-bladed Horizontal Axis Wind Turbine (HAWT) under the influence of a hailstorm. The importance and originality of this study are that it explores the aerodynamic performance of an optimum ...
Dimitra Douvi   +2 more
doaj   +1 more source

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