Natural convection during ice formation: numerical simulation vs. experimental results

Marilena Giangi; Tomasz A. Kowalewski; Fulvio Stella; Eddie Leonardi

Marilena Giangi Universita di Roma
Tomasz A. Kowalewski Institute of Fundamental Technological Research Polish Academy of Sciences
Fulvio Stella Universita di Roma
Eddie Leonardi University of New South Wales

Abstract

A numerical and experimental study is presented of unsteady natural convection during freezing of water in a differentially heated cube shaped cavity. A boundary fitted grid as well as the enthalpy- porosity fixed grid numerical models are used in this study. Both numerical models show very good agreement with the experimental data only for pure convection and initial time of freezing process. As time passes the discrepancies between numerical predictions and the experiment became more significant. To elucidate these differences several numerical tests are performed, verifying assumptions made in the models.

Keywords

References

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