Abstract
An abrasive injection jet (AIJ) has a tendency to pulsate violently as abrasive flow rate increases. One of main sources of the pulsation is considered to be fluctuation of the abrasive supply to the nozzle head. High-speed observations of the flow in an abrasive supply tube are conducted in the present investigation. For simplicity, a straight abrasive supply tube is connected horizontally to a suction chamber. Abrasive particles tend to form clusters while particles are transferred in the tube.
