Liquid Film Thickness Measurements in University of Michigan Wet Steam Tunnel.

摘要

The initial results from the wet-steam flow research program at the University of Michigan have been described previously in this Forum in 1974. The program is concerned with the behavior and stability of thin liquid films upon simulated turbine blades under high velocity steam flow,and with their subsequent breakup into liquid droplets,which are then entrained into the wake,giving rise to an erosion problem in the next downstream rotating row. The problem of thin liquid film behavior in the non-adiabatic case has application also to problems of 'dry-out'in high void fraction boiling,particularly with regard to emergency core cooling of liquid-cooled nuclear reactors.