Reference : On the Reduction of Computational Costs for Tungsten Powder Bed Processes
Scientific congresses, symposiums and conference proceedings : Unpublished conference
Physical, chemical, mathematical & earth Sciences : Chemistry
Physics and Materials Science
http://hdl.handle.net/10993/54512
On the Reduction of Computational Costs for Tungsten Powder Bed Processes
English
Estupinan Donoso, Alvaro Antonio mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
Aminnia, Navid mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Peters, Bernhard mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Michels, Andreas mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
31-May-2022
Yes
No
International
20 Plansee seminar
May30-June 3 2022
Plansee
Reutte
Austria
[en] Coupled CFD-DEM ; tungsten oxide ; reduction ; oxidation ; discrete element method ; cfd ; computational cost
[en] During the Discrete Element Method (DEM) representation of powder bed processes (e.g. tungsten oxide reduction, tungsten carbide synthesis, selective laser sintering) a numerical solution for each single particle is impractical due to the extremely high number of particles (e.g. 10^12). However, in such processes, particles in the vicinity of each other observe low gradients concerning their thermodynamic state. This characteristic can be exploited to avoid solving repeatedly numerically equivalent equation systems.
This contribution presents two numerical methods aiming to reduce the computational costs of DEM approaches for the thermochemical conversion of powder beds. In the two methods after an appropriated numerical treatment, a group of particles under similar boundary conditions is substituted by a single-effective-entity. Consequently, the entire powder space is divided into sub-domains to be solved. The methods result in considerable lower number of equations that increase computational efficiency and enable feasible time simulations. The applications of the industrial synthesis of tungsten powders and the selective laser sintering (SLS) of powder metals are presented and discussed.
Researchers ; Professionals ; Students
http://hdl.handle.net/10993/54512
https://www.plansee-seminar.com
FnR ; FNR13564670 > Alvaro Antonio Estupinan Donoso > TuCaNG, for Tungsten Carbide Nucleation and Growth > Experimental And Numerical Investigation On Synthesis Of Tungsten And Tungsten Carbide > 01/05/2020 > 30/04/2023 > 2019

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