Abstract:
An experimental and theoretical study was performed for establishing the model of liquid entrainment at T-junction consisting of hot leg for AP1000 nuclear power plant and ADS-4 pipe, including onset entrainment and stable entrainment models. Based on the experimental and theoretical analyses, onset entrainment model and steady-state entrainment model were established, which accord with experiment data well. The influence of entrance length on entrainment was discussed to determine the entrance length of the test section. The effect of liquid flow on onset entrainment and stable entrainment was analyzed, and the experiment results show that the effect of liquid flow on entrainment through ADS-4 pipe can be neglected.