[01] Hai-Ping Hu, Department of Marine Engineering, National Taiwan Ocean University, Keelung, Taiwan.

A theoretical investigation is performed into the heat transfer efficiency of turbulent film boiling on a horizontal, isothermal elliptical tube immersed in upward flowing liquid. The high velocity of the flowing saturated liquid at the boundary layer is determined by potential flow theory. The vapor-liquid interfacial shear induced in forced convection turbulent film boiling process is developed in the present research. The results shows, the surface tension effects increase in the forced convection boiling system under high velocities of flowing liquid, the mean Nusselt will very slightly decrease. Besides, turbulent film boiling under the high velocity of upward flowing liquid, the increase in the Froude number will bring out an increase in the mean Nusselt number. Finally, a comparison between the results of the present study and those reported in previous experimental studies is provided.

Froude Number, Surface Tension, Eccentricity, Interfacial Shear

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