Overview of Critical Vortex on Horizontal Jet Fluidization for Sediment Flushing Systems

The phenomenon of horizontal jets in the fluidization system can provide initial information on the fluidization phase of sediment in many fluidization experiments for the maintenance of the channel. The objective of this study was to investigate the hydraulic performance of horizontal jet fluidization in generating Critical Vortex until fluidization occurs. The research method is based on two-dimensional physical experience. The test results show that The discharge and Pressure requirement for achieving fluidization is achieved through the stages of reaching the critical vortex. Critical discharge and pressure cause fluidization of the horizontal jet when the critical vortex reaches 0.65 dB of the sediment layer. The addition of each layer of sediment increases the fluidization discharge to reach the critical vortex. The change in the dimensions of the vertical vortex on the horizontal jet is caused by friction between the fluid particles and the sediment layer, especially at the angle of the change in the direction of the jet holes from horizontal to vertical.