Liquid Films Flowing Concurrently with Air in Horizontal Duct : 1st Report, Flow Pattern

Relation between the occurrence of Burnout and differential pressure fluctuation characteristics caused by the disturbance waves passing by a flow obstacle in a vertical boiling two-phase upward flow in a narrow annular channel

“…The minimum film thickness δ min , which is defined as the thickness at 1% of the cumulative frequency distribution of the water film thickness (Fukano et al, 1979), is assumed to be approximately equal to the thickness of the base film between disturbance waves. The minimum film thickness δ min is estimated from following Fourier's law without measuring the water film thickness considering that the internal structure of the flow in the very thin water film is laminar.…”

Theoretical analysis of using airflow to purge residual water in an inclined pipe

“…[6] gave empirical formulae for the stress on the interface on experiments, rg is given Substituting Eqs. (6), (7) and (8) …”