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A FAST, UNCONDITIONALLY STABLE FINITE-DIFFERENCE SCHEME FOR HEAT CONDUCTION WITH PHASE CHANGE.

Author(s) : PHAM Q. T.

Type of article: Article

Summary

IN THE NUMERICAL SOLUTION OF HEAT CONDUCTION PROBLEMS WITH PHASE CHANGE BY FINITE DIFFERENCES, ENTHALPY METHODS OR TEMPERATURE METHODS CAN BE USED. THE FORMER REQUIRE EITHER AN EXPLICIT PROCEDURE WITH CONSEQUENT CONVERGENCE PROBLEMS, OR ITERATION AT EACH TIME STEP IF IMPLICIT PROCEDURES ARE USED. THE LATTER ARE SUBJECT TO THE PROBLEM OF JUMPING THE LATENT HEAT PEAK, NECESSITATING THE USE OF SMALL TIME STEPS TO AVOID UNDERPREDICTION OF PHASE CHANGE TIMES. THIS PAPER SUGGESTS A SIMPLE METHOD THAT ELIMINATES BOTH PROBLEMS.

Details

  • Original title: A FAST, UNCONDITIONALLY STABLE FINITE-DIFFERENCE SCHEME FOR HEAT CONDUCTION WITH PHASE CHANGE.
  • Record ID : 1986-1384
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 28 - n. 11
  • Publication date: 1985

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