Numerical Study of Spatial Surface Temperature and Nucleation Site Density At High Heat Flux Pool Boiling
نویسندگان
چکیده
A numerical study of nucleation site density was included into the macrolayer model of Maruyama et al.. The results indicate that nucleate boiling curve and critical heat flux point move to the lower superheat region with increasing surface roughness, which is in a good agreement with Bereson ’s experiment. Furthermore, a three dimensional numerical method using finite control volume method and implicit numerical method was developed to explore spatial and temporal variations on surface temperature. The results show that the temperatures at the interface of vapor stem and liquid layer change sharply, whereas the temperatures at the areas that are only occupied by vapor stem and liquid vary smoothly.
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