Numerical Simulation and Validation of Gas and Molten Metal Flows in Close-Coupled Gas Atomization

F. Hernandez*, T. Riedemann, J. Tiarks, B. Kong, J. D. Regele, T. Ward, I. E. Anderson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Molten metal atomization in close-coupled gas atomization dies can operate between two limiting conditions, jetting and filming, together with several complex mechanisms: liquid-gas drafting, downward/upward shearing, melt bouncing, etc. Liquid jet deformation depends on flow and geometric parameters, such as liquid Reynolds, liquid Weber, and gas Mach numbers, as well as gas jet apex angle and melt tube tip extension and aspect ratio, among others. Understanding their effect is of importance for the metal powder making industry. Numerical gas atomization studies can provide approximated flow information and consider a wide range of conditions, beyond experimental reach. Here, 3D high-resolution simulations employing a 5-equation compressible flow model coupled with the volume-of-fluid method are compared with experiments, for liquid Weber number in the range of 1–30 and liquid Reynolds number below 10,000. This validation explores the predicting capabilities of the numerical model.

Original languageEnglish
Title of host publicationTMS 2019 148th Annual Meeting and Exhibition Supplemental Proceedings
PublisherSpringer International Publishing
Pages1507-1519
Number of pages13
ISBN (Print)9783030058609
DOIs
StatePublished - 2019
Externally publishedYes
Event148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019 - San Antonio, United States
Duration: 10 Mar 201914 Mar 2019

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019
CountryUnited States
CitySan Antonio
Period10/03/1914/03/19

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