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Granular Matter

, 22:2 | Cite as

Numerical analysis of powder deposition in direct material injection

  • B. PetersEmail author
  • G. Pozzetti
Original Paper
  • 24 Downloads

Abstract

Directed energy deposition technologies for additive manufacturing is a fast growing technique mainly due to its flexibility in product design. However, the process is a complex interaction of multi-physics on multiple length scales that are still not entirely understood. A particularly challenging task is the flow characteristics of metallic powder ejected as jets from a nozzle and shielded by an inert turbulent gas flow. Therefore, the objective is to describe numerically the complex interaction between turbulent flow and powder grains. In order to include both, several physical processes and length scales, a Euler–Lagrange technology is applied. Within this framework powder is treated by the discrete-element-method, while the gas flow is described by Euler approaches as found in classical computational fluid dynamics.

Keywords

Energy deposition method Powder Modelling Fluiddynamics XDEM 

Notes

Acknowledgements

The simulations presented in this paper were carried out using the HPC facilities of the University of Luxembourg [45]–see https://hpc.uni.lu.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Université du LuxembourgLuxembourgLuxembourg

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