抄録
The unsteady measurement of liquid film thickness is essential to investigate liquid film structure in the two phase annular-mist flow and especially to establish the dry out mechanism of liquid film on fuel rod around spacer in the new fuel assembly of BWR. The basic experiment is conducted to multi-points resistance probe to measure liquid film thickness profile in flow single channel with same cross-sectional configurations. Influences of spacer in rod gap on the liquid film thickness were clarified experimentally.
