Numerical Simulation of Directional Solidification of Castings,

Abstract

Some rules for numerical simulation of the directional solidification process with steep temperature gradient were investigated. In order to improve the accuracy of calculation, the effect of the term (del k/del T) (del T/del Z) squared in the heat transfer equation on the outcome with steep temperature gradient is discussed. Problems such as how to treat latent heat of solidification, thermal properties at the casting/mold interface and the initial condition are also analyzed. Both finite difference and finite element methods were used to calculate the same casting under identical initial and boundary conditions with the same physical parameters. The results were compared. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 19, 1985
Accession Number
ADA159179

Entities

People

  • Y. Quiping
  • Z. Yaohe

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Alloys
  • Aluminum Alloys
  • Casting (Fabrication)
  • Castings
  • Coefficients
  • Elements
  • Equations
  • Finite Element Analysis
  • Foreign Technology
  • Heat Energy
  • Heat Transfer
  • High Temperature
  • Latent Heat
  • Simulations
  • Specific Heat
  • Temperature Gradients
  • Thermal Conductivity

Fields of Study

  • Materials science

Readers

  • Coastal Oceanography
  • Computational Fluid Dynamics (CFD)
  • Thermal Physics or Thermal Science.