Void formation in unidirectional freezing from above

C. D. Sulfredge, L. C. Chow, K. A. Tagavi

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Experiments were conducted to observe the solidification sequence and final shrinkage void distribution for liquids solidified from above in a rigid, constant-volume container. The overall void distribution appears to depend strongly on the initial liquid temperature and to a lesser extent on the cooling rate. A thermodynamic model has been developed that follows the liquid, vapor, and solid phases throughout the cooling process. Several void-formation phenomena are then examined qualitatively with reference to the thermodynamic model. We feel that these results will lead eventually to better void management in phase-change materials for storing thermal energy.

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalExperimental Heat Transfer
Issue number1
StatePublished - 1993

Bibliographical note

Funding Information:
This material is based on work partly supported under the first author's National Science undation Graduate Fellowship. The project was also funded by the Air Force Aero Propulsion and wer Laboratory, Contract F33615-87-C-2777.

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Instrumentation
  • Electrical and Electronic Engineering


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