Local Void Fractions and Bubble Velocity in Vertical Air-Water Two-Phase Flows Measured by Needle-Contact Capacitance Probe

Figure 15

Flow structures and output signals for different flow patterns.

(a) Single-phase liquid ( m/s,  m/s)

(b) Single-phase gas ( m/s,  m/s)

(c) Bubbly flow ( m/s,  m/s)

(d) Slug flow ( m/s,  m/s)

(e) Churn flow ( m/s,  m/s)