Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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An Analysis of Heat and Fluid Flow in the Laser Surface Melting with a Deformed Surface

굴곡의 표면을 가진 금속의 레이저 용융에 대한 열 및 유체유동 해석

  • 김영득 (한양대학교 대학원 기계공학과) ;
  • 심복철 (LG 실트론, 웨이퍼 연구소, 결정성장연구팀) ;
  • 김우승 (한양대학교 기계공학과)
  • Published : 2005.01.01
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Abstract

Laser melting problems with deformed substrates are investigated by axisymmetric numerical simulations. Source-based method is used to solve the energy equation, and the momentum equations are solved in the liquid domain with SIMPLER algorithm. Using a laser beam with a top-hat heat flux distribution, this study is performed to examine the effect of surface deformation, beam power density and surface tension force on the molten pool during laser melting. Surface temperature decreases with increasing surface deformation, while surface velocity increases. It is found that surface deformation, beam power density and surface tension force have a very significant effect on heat transfer and fluid flow during laser melting.

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References

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