| 论文简介 |
Experiments of density wave instability in a sodium boiling two-phase flow in an annulus were carried out with
the parameters of heat flux from 80 to 976 kW/m2, inlet subcooling from 25.6 to 226.8◦C, mass flow rate from 7.92
to 68.9 kg/h, and system pressure from 2,600 Pa to 0.06MPa. It was found that the density wave instability occurred
in the case of low exit quality, and the oscillation of flow rate was so large that the flow would be reversal. The lower
inlet temperature, the higher system pressure and the larger mass flow rate could result in a more stable boiling twophase
flow. The oscillation period of the instability increased with the system pressure and the inlet subcooling, but it
decreased with the mass flow rate. A correlation for the onset condition of the density wave instability was obtained
from the experimental data. |
(创新港)
