Pressure Loss and Vortex Pattern in Pipes Such the Hydrocyclone

Pressure loss in a pipe such as the hydrocyclone without underflow changed abruptly at a certain flow rate and the pressure-flow rate curve showed a hysteresis. In order to clarify the above phenomena, experiments were conducted for straight pipes in which water entered through the tangential inlet pipe and flowed out through the axial outlet pipe such as a cyclone. There were two patterns for the pressure-flow rate curve and they varied with the pipe length. The difference between the pressure loss curves resulted from the vortex pattern in the pipe.