摇摆运动下矩形窄通道内流动沸腾阻力特性研究

On the background of the miniaturization of heat exchanger, experimental investigation and analysis of the pressure drop of flow boiling in narrow rectangular channel were conducted under rolling motion. Several correlations for the two-phase frictional pressure drop were evaluated against the experimental data. The results show that the correlations for conventional channel poorly predict the results. While the Sun-Mishima and Zhang-Mishima correlations developed for narrow channel are better than other correlations; on the other hand, the pressure drop characteristic of flow boiling was analyzed under rolling motion. The two-phase pressure drop changes cyclically due to the rolling motion，rolling angle and period almost have no effect on the fluctuation of pressure drop and average two-phase frictional pressure drop.