Stability of numerical simulations of dendritic solidification

Pinghua Zhao, Juan C. Heinrich, David R Poirier

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Novel developments in the numerical simulation of diffusion limited dendritic growth are discussed in the context of two-dimensional simulations of solidification of pure substances and of binary alloys. The three most important numerical difficulties encountered in the simulations of dendritic growth of binary alloys are discussed : 1) the need to accurately calculate the position and velocity of the interface as part of the solution; 2) the disparity of length scales between the thermal diffusion length and the solute diffusion length ; and 3) the instability of the solid-liquid interface, particularly at high concentrations of solute. Dealing with the third difficulty constitutes the main objective of this paper. The stability of calculations is studied using the continuity condition on the heat flux across the interface and numerical simulations. The latter are used to assess the current modeling capabilities and the hurdles faced to produce more powerful simulators.

Original languageEnglish (US)
Pages (from-to)586-592
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume46
Issue number4
DOIs
StatePublished - Nov 2003

Fingerprint

Binary alloys
solidification
Solidification
Thermal diffusion
Computer simulation
binary alloys
diffusion length
Interfaces (computer)
Heat flux
solutes
simulation
Simulators
Liquids
thermal diffusion
liquid-solid interfaces
continuity
simulators
heat flux

Keywords

  • Binary alloys
  • Finite elements
  • Interface stability
  • Interface tracking

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

Cite this

Stability of numerical simulations of dendritic solidification. / Zhao, Pinghua; Heinrich, Juan C.; Poirier, David R.

In: JSME International Journal, Series B: Fluids and Thermal Engineering, Vol. 46, No. 4, 11.2003, p. 586-592.

Research output: Contribution to journalArticle

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