Journal of Fluid Science and Technology
Online ISSN : 1880-5558
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Two-fluid model to simulate metal powder bed fusion additive manufacturing
Noriko WATARIYuzuru OGURANoriko YAMAZAKIYukihiko INOUEKeisuke KAMITANIYasuyuki FUJIYAMasahiko TOYODASaneyuki GOYAToshiya WATANABE
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2018 Volume 13 Issue 2 Pages JFST0010

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Abstract

This paper reports our simulations of the metal powder fusion additive manufacturing process based on a two-fluid model. In simulations of metal behavior in which heat is applied by high-density energy sources (e.g., laser or electron beam), the aspects that need to be correctly modeled include boiling and evaporation, as well as melting and solidification. The potential of the two-fluid model to clarify numerous physical phenomena—deep penetration, plume generation, spatter generation due to interfacial pressure differences between gas and liquid phases, and the transport of spatter with high-speed-plume flow—are shown from a perspective that departs from conventional interpretations. This paper compares and discusses the results of simulating the penetration and width of single beads and experimental results.

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© 2018 by The Japan Society of Mechanical Engineers
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