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Ki, Hyungson
Laser Processing & Multiphysics Systems Laboratory
Research Interests
  • Laser materials processing
  • Laser material interaction

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Modeling of laser keyhole welding: Part I. Mathematical modeling, numerical methodology, role of recoil pressure, multiple reflections, and free surface evolution

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dc.contributor.author Ki, Hyungson ko
dc.contributor.author Mohanty, PS ko
dc.contributor.author Mazumder, J ko
dc.date.available 2014-09-29T01:35:55Z -
dc.date.created 2014-09-25 ko
dc.date.issued 2002-06 -
dc.identifier.citation METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v.33, no.6, pp.1817 - 1830 ko
dc.identifier.issn 1073-5623 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6580 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0036600642 ko
dc.description.abstract A three-dimensional laser-keyhole welding model is developed, featuring the self-consistent evolution of the liquid/vapor (L/V) interface together with full simulation of fluid flow and heat transfer. Important interfacial phenomena, such as free surface evolution, evaporation, kinetic Knudsen layer, homogeneous boiling, and multiple reflections, are considered and applied to the model. The level set approach is adopted to incorporate the L/V interface boundary conditions in the Navier-Stokes equation and energy equation. Both thermocapillary force and recoil pressure, which are the major driving forces for the melt flow, are incorporated in the formulation. For melting and solidification processes at the solid/liquid (S/L) interface, the mixture continuum model has been employed. The article consists of two parts. This article (Part I) presents the model formulation and discusses the effects of evaporation, free surface evolution, and multiple reflections on a steady molten pool to demonstrate the relevance of these interfacial phenomena. The results of the full keyhole simulation and the experimental verification will be provided in the companion article (Part II). ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher SPRINGER ko
dc.subject LIQUID-PHASE-CHANGE ko
dc.subject LEVEL SET APPROACH ko
dc.subject CONTINUUM MODEL ko
dc.subject DENDRITIC SOLIDIFICATION ko
dc.subject SPECIES TRANSPORT ko
dc.subject PENETRATION DEPTH ko
dc.subject TRANSIENT MODEL ko
dc.subject CHANGE SYSTEMS ko
dc.subject UNIFIED MODEL ko
dc.subject DYNAMICS ko
dc.title Modeling of laser keyhole welding: Part I. Mathematical modeling, numerical methodology, role of recoil pressure, multiple reflections, and free surface evolution ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0036600642 ko
dc.identifier.wosid 000176087700023 ko
dc.type.rims ART ko
dc.description.wostc 69 *
dc.description.scopustc 88 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-09-25 *
dc.identifier.doi 10.1007/s11661-002-0190-6 ko
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