Flow Pattern and Frictional Losses in Pulsating Pipe Flow : 1st Report, Effect of Pulsating Frequency on the Turbulent Flow Pattern

Fundamental Study on Particle Transportation by Pressure Waves in Pipes—The Characteristics of Particle Transportation— [Translated]^†

“…The unsteady flow in pipes has been researched with focus on oscillating f low 9,10) and pulsating flow [11][12][13] , where oscillating flow is superimposed on a mean f low. In pneumatic transportation, experimental research on the behavior with pulsating flow 14) was clarified, but it seems that there has been no research on pulsating f low or oscillation flow using pressure waves.…”