相転位を伴うヘリウム?の流動伝熱特性に関する研究

概要

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A numerical models presented to investigate into the characteristics of the forced convective heat transfer in a locally heated He II pipe line subject to phase changes: \lambda -transition and boiling. Transient temperature distributions obtained with this model in the case of no \lambda -transition are compared with those obtained with the two-fluid model. Showing good agreement between them except for a short period lust after the initiation of the heating. Thus the validity and the limit of this model is clarified, Then numerical analyses using this model are carried out in the cases both of the \lambda -transition and the boiling are taken into account. Some results on heat transfer characteristics of He II with phase changes are given and usefulness of the present model is verified.
九州大学の論文