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中文摘要：
采用ANSYS FLUENT14.5分析湍流模型对过冷沸腾的影响,建立多套网格,每套网格采用不同的湍流模型、壁面函数及两相湍流处理方法,将计算结果与基准实验数据进行对比,分析网格、湍流模型、壁面函数及两相湍流处理方法对计算精度的影响。通过分析发现：k-ε模型的计算精度高于k-ω模型的;Dispersed方法和Per Phase方法的计算精度相对于Mixture的无明显提升;增强壁面函数对Y＋≈1的网格无法获得满意的计算结果。
英文摘要：
The ANSYS FLUENT14.5 was employed to simulate the two-phase forced convection subcooled boiling in a vertical heated pipe. Different turbulence models, wall functions and two-phase turbulence treatments were utilized to each of four sets of grids. Results were compared with experiment data to analyze the effects of grids,turbulence model, wall functions and two-phase turbulence treatments. The results of k-ω model show better agreement with experiment data than those of k-ω model. Dis- persed and Per Phase treatments for two-phase turbulence parameters perform no better than Mixture treatment. The enhanced wall function can＇t achieve satisfactory results for the grid with near wall function Y＋≈1.
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