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Volume 11
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10.3390/met11122002
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Article

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

by
Stanislav Stankevich
*,
Nikolay Larionov
and
Ekaterina Valdaytseva
World-Class Research Center, “Advanced Digital Technologies”, State Marine Technical University, 190121 Saint Petersburg, Russia
*
Author to whom correspondence should be addressed.
Metals 2021, 11(12), 2002; https://doi.org/10.3390/met11122002
Submission received: 30 October 2021 / Revised: 4 December 2021 / Accepted: 6 December 2021 / Published: 11 December 2021
(This article belongs to the Special Issue Laser Processing of Metals and Alloys)
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Abstract

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.
Keywords: numerical study; laser-based directed energy deposition; turbulent hydrodynamic; particle tracing; additive technology; powder allays; simulation and modeling numerical study; laser-based directed energy deposition; turbulent hydrodynamic; particle tracing; additive technology; powder allays; simulation and modeling

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MDPI and ACS Style

Stankevich, S.; Larionov, N.; Valdaytseva, E. Numerical Analysis of Particle Trajectories in a Gas–Powder Jet during the Laser-Based Directed Energy Deposition Process. Metals 2021, 11, 2002. https://doi.org/10.3390/met11122002

AMA Style

Stankevich S, Larionov N, Valdaytseva E. Numerical Analysis of Particle Trajectories in a Gas–Powder Jet during the Laser-Based Directed Energy Deposition Process. Metals. 2021; 11(12):2002. https://doi.org/10.3390/met11122002

Chicago/Turabian Style

Stankevich, Stanislav, Nikolay Larionov, and Ekaterina Valdaytseva. 2021. "Numerical Analysis of Particle Trajectories in a Gas–Powder Jet during the Laser-Based Directed Energy Deposition Process" Metals 11, no. 12: 2002. https://doi.org/10.3390/met11122002

APA Style

Stankevich, S., Larionov, N., & Valdaytseva, E. (2021). Numerical Analysis of Particle Trajectories in a Gas–Powder Jet during the Laser-Based Directed Energy Deposition Process. Metals, 11(12), 2002. https://doi.org/10.3390/met11122002

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