Showing papers on "Stefan number published in 1986"
TL;DR: In this article, the effects of Stefan number and the relative density of the source on its velocity were investigated and reported for this configuration, the predicted heat source velocity and its dependence on its relative density is in good agreement with the experiments.
42 citations
TL;DR: In this paper, an asymptotic large time solution for the convection Stefan problem with surface radiation was obtained by requiring that the expansion assumed for the interface position X(t) and wall temperature uw(t), for large times are consistent with the resulting interfacial Lagrange-Burmann expansions.
5 citations
TL;DR: In this paper, a numerical analysis was made on the heat transfer in the solidification process around a circular-finned tube, and the effects of the tube radius, fin distance, fin thickness and Stefan number on heat transfer characteristics were demonstrated.
Abstract: A numerical analysis was made on the heat transfer in the solidification process around a circular-finned tube, and the effects of the tube radius, fin distance, fin thickness and Stefan number on the heat transfer characteristics were demonstrated. Among these, the fin distance is most effective, and the effect of the Stefan number is very small. Moreover, an approximate numrical solution was presented by utilizing the one-dimensional quasi-steady state heat conduction analysis to the present problem. This approximate solution indicates fairly close agreement with the above numerical solution.
2 citations
TL;DR: In this paper, an experiment was performed to investigate the heat transfer characteristics of a latent heat storage unit with a circular-finned tube in melting and solidification processes, and the experimental data were compared with the numerical analysis shown in the 1st Report.
Abstract: An experiment was performed to investigate the heat transfer characteristics of a latent heat storage unit with a circular-finned tube in melting and solidification processes. The experimental data were compared with thee values calculated by the numerical analysis shown in the 1st Report. In the solidification process, the experimental heat fluxes were 020 percent larger than the numerical calculations. It seems that this is due to the occurrence of dendrites. The influence of the Stefan number showing the heat capacity effect of a phase change material is small, as demonstrated by the numerical analysis. In the melting process, as the melting progresses, natural convection predominates over heat conduction. The heat fluxes obtained from the experiment are therefore much larger than the values predicted by the numerical analysis, taking account of the heat conduction only.
2 citations