二段液膜抽出法を用いた下降流の液膜流量計測

抄録

In this study, in order to develop the film flow model for critical heat flux prediction in a downward flow, a double liquid film extraction method was applied to a forced flow boiling system. In addition, characteristics of liquid droplet at the downstream of the first liquid film extraction section were simultaneously observed by high-speed camera. As the results, the liquid film mass flux at heating section exit and the droplet transfer coefficients in downward flow were successfully obtained. The obtained droplet transfer coefficients in downward flow correlated with not droplet concentration but volumetric flux, and these characteristics may be correlated with the unique liquid droplet movement of downward flow.