Flow characteristics of metallic powder grains for additive manufacturing

Peters, Bernhard; Pozzetti, Gabriele

Reference : Flow characteristics of metallic powder grains for additive manufacturing


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Mechanical engineering
	Focus Areas :	Computational Sciences
	To cite this reference:	http://hdl.handle.net/10993/31734

Title :	Flow characteristics of metallic powder grains for additive manufacturing
Language :	English
Author, co-author :	Peters, Bernhard [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	Pozzetti, Gabriele [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Publication date :	30-Jun-2017
Journal title :	EPJ Web of Conferences
Publisher :	EDP Sciences
Volume :	13001
Pages :	140
Peer reviewed :	Yes
Audience :	International
e-ISSN :	2100-014X
Keywords :	[en] Additive Manufacturing ; CFD-DEM ; Numerical Simulation
Abstract :	[en] Directed energy deposition technologies for additive manufacturing such as laser selective melting (SLM) or electron beam melting (EBM) is a fast growing technique mainly due to its flexibility in product de- sign. However, the process is a complex interaction of multi-physics on multiple length scales that are still not entirely understood. A particular challenging task are 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 an Euler-Lagrange technology is applied. Within this framework powder is treated by the Discrete-Element-Method, while gas flow is described by Euler approaches as found in classical Compu- tational Fluid Dynamics (CFD). The described method succeeded in delivering more accuracy and consistency than a standard approach based on the volume averaging technique and therefore, is suited for the solution of problems within an engineering framework.
Name of the research project :	Luxdem.AdditiveMan
Permalink :	http://hdl.handle.net/10993/31734

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