Mathematical Model of Air Pocket Evolution during Water Filling a Long-Slope Pipeline and Its Application to Air Removal Prediction

Figure 6

Comparison of simulation results and field data: (a) valve chamber 1 in pipeline 1, (b) valve chamber 2 in pipeline 1, (c) valve chamber 3 in pipeline 2, and (d) valve chamber 4 in pipeline 2.

(a)

(b)

(c)

(d)