抄録
The main purpose of this paper is to examine the validity of a homogeneous flow model to predict the onset of the density-wave oscillation in a natural circulation boiling channel. Seven different homogeneous flow models are tested. The major differences among them relate to how to treat the heat capacity in the subcooling region and the frictional coefficient. The analytical results obtained by these models are compared with the experimental data. As a result, it was made clear that the best model is the one considering the effect of the heat capacity in the subcooling region up to the subcooled boiling boundary and ignoring the transient changes of the frictional coefficient.
