A Novel Type of Surge Shaft Instability.

Hydraulics of Sewers

“…For example, consider the moving discontinuity between unsteady supercritical and subcriticai flows in a sewer shown in Fig. As such, under unfavorable conditions, resonance could occur, similar to the situation described by Anderson (1979). When it reaches the junction, the shock may be passed on to the other connecting sewers at the junction.…”