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A Review of Flow Pattern of Boiling Flowing in the Tube

Both boiling flowing and heat transfer has widely applied to engineering. The predictions of boiling heat transfer depend on the characteristics of boiling flow pattern, and thus it is necessary to comprehend the update development of flow pattern of boiling heat transfer. At the present work, the recent investigations were reviewed, and these findings mainly focus on the classification of various flow patterns and the transition of flow pattern. The obtained flow pattern map is mainly based on the experimental data from air-water at adiabatic conditions. These investigations tend to propose a simple and general flow pattern map; however, the limitation of both experimental conditions and the number of experimental data modifies the goal. Analysis of flow pattern transition has been developed from few semi-empirical and semi-theoretical models; its application has been limited because of complexity of flow pattern and many determinant factors.