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CFD Study on the Role of Gas Friction on the Molten Layer Shape and Melt Removal Mechanism in Laser Cutting Process of Steel

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Abstract:

A numerical analysis of the role of the gas friction force on the shape of the melt surface in laser cutting process is carried out. The liquid film shape is analyzed in the central plane of cutting for both cases with the pressure gradient force only and for the case of gas friction force contribution. It is shown that, the gas friction force has a significant role in the formation of humps in the central kerf zone and the transition from the smooth melt ejection regime to a wavy structure characterized by humps formation.

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Periodical:

Advanced Materials Research (Volume 856)

Pages:

220-225

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.856.220

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Online since:

December 2013

Authors:

Karim Kheloufi*, El Hachemi Amara

Keywords:

Fluid Flow, Heat Transfer, Laser Cutting, Numerical Modeling

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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