Numerical Analysis of Particle Trajectories in a Gas–Powder Jet during the Laser-Based Directed Energy Deposition Process

Based on numerical solutions of the equation of motion of a particle in a gas jet modeled by the Reynolds-averaged Navier–Stokes equations, the features of transporting powder particles to the working zone of laser-based directed energy deposition are investigated. The propagation of a gas jet in a...

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Bibliographic Details
Published in:Metals (Basel ) 2021-12, Vol.11 (12), p.2002
Main Authors: Stankevich, Stanislav, Larionov, Nikolay, Valdaytseva, Ekaterina
Format: Article
Language:English
Subjects:
additive technology
Approximation
Confined spaces
Deposition
Economic indicators
Efficiency
Equations of motion
Flow velocity
Gas flow
Gas jets
Gases
Geometry
Gravity
Laser applications
laser-based directed energy deposition
Lasers
Mathematical models
Nozzles
Numerical analysis
numerical study
Parameters
particle tracing
Particle trajectories
powder allays
Radiation
Reynolds averaged Navier-Stokes method
Reynolds number
Substrates
Trajectory analysis
Turbulence models
turbulent hydrodynamic
Velocity distribution
Viscosity
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Summary:Based on numerical solutions of the equation of motion of a particle in a gas jet modeled by the Reynolds-averaged Navier–Stokes equations, the features of transporting powder particles to the working zone of laser-based directed energy deposition are investigated. The propagation of a gas jet in a confined space in the presence of obstacles in the form of a substrate and a wall of a part is considered. A solution determining the gas-dynamic parameters of the jet is obtained, and the results of calculating its velocity field are presented. The influence of gas-dynamic parameters on the trajectories of the powder particles is analyzed. It is shown that these parameters determine the amount of model material involved in the formation of the geometry of the part.
ISSN:2075-4701
2075-4701
DOI:10.3390/met11122002