Thermocapillary flows of surface melting due to a moving heat flux

J. C. Chen, Yi-Cheng Huang

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The convective heat transfer and fluid flow that occurs during laser surface melting is examined through a series of numerical computations. The momentum equations and the energy equation are solved by a finite-difference method with a grid-stretching transformation, which places more grid points in the molten region. The effects of thermocapillary convection in the melt and the moving speed of the external heat source on the shape of the solid-liquid interface are considered. Results show that the latent heat of fusion and different dimensionless parameters associated with the moving uniform heat flux have profound effects on determining the melting shape.

Original languageEnglish
Pages (from-to)663-671
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume34
Issue number3
DOIs
Publication statusPublished - 1991 Jan 1

Fingerprint

Heat flux
heat flux
Melting
grids
melting
heat of fusion
convective heat transfer
Latent heat
liquid-solid interfaces
heat sources
Finite difference method
Stretching
fluid flow
Molten materials
Flow of fluids
Momentum
convection
Fusion reactions
Heat transfer
momentum

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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Thermocapillary flows of surface melting due to a moving heat flux. / Chen, J. C.; Huang, Yi-Cheng.

In: International Journal of Heat and Mass Transfer, Vol. 34, No. 3, 01.01.1991, p. 663-671.

Research output: Contribution to journalArticle

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AB - The convective heat transfer and fluid flow that occurs during laser surface melting is examined through a series of numerical computations. The momentum equations and the energy equation are solved by a finite-difference method with a grid-stretching transformation, which places more grid points in the molten region. The effects of thermocapillary convection in the melt and the moving speed of the external heat source on the shape of the solid-liquid interface are considered. Results show that the latent heat of fusion and different dimensionless parameters associated with the moving uniform heat flux have profound effects on determining the melting shape.

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