论文名称： 低质量流速下内螺纹管摩擦压降特性研究Investigation on the frictional pressure drops at low mass fluxes in an internally-ribbed tube
作者： 王建国;李会雄
来源出版物： 中国电机工程学报
年卷期页： 2015,35(3):638-644
收录类型： EI:20151100627634
论文简介： At low mass fluxes, experimental investigation on the frictional pressure drops of high pressure steam water two-phase flows in an adiabatic horizontal Siemens AG optimized internally-ribbed tube with a diameter of 蠁 31.8 mm 脳 6.0 mm was carried out. The two-phase frictional pressure drops of an adiabatic horizontal smooth tube with a diameter of 蠁 31.8 mm 脳 6.0 mm were also measured under the same experimental conditions to provide a data base for comparison. In addition, the frictional pressure drops at supercritical pressures in the internally-ribbed tube were obtained. According to experimental data, the two-phase flow friction multiplier was calculated and its variations with the pressure, the mass flux and the steam quality were obtained. At supercritical pressures, the variations of the frictional pressure drops with the mass flux, the bulk enthalpy and the pressure were also analyzed. By comparison, it is found that the two-phase friction multiplier of the horizontal internally-ribbed tube has an obvious peak value, which is much larger than that of the horizontal smooth tube, in the region with high steam qualities. Comparing to the single-phase frictional factor at subcritical pressures, the characteristic of frictional factor at supercritical pressures is that there is a sudden change at the point of the pseudo-critical temperature, that is to say, there is a peak value.
原文链接： 低质量流速下内螺纹管摩擦压降特性研究Investigation on the frictional pressure drops at low mass fluxes in an internally-ribbed tube