Mass distribution in the plume of a transverse slurry jet in supersonic flow

Liquid and slurry jets were injected through a circular orifice transversely to a M = 3.0 airflow. Mass samples of both jets were taken across the plume 30 injector diameters downstream. A mass flow distribution was determined for each case. Pitot and static pressure surveys were taken across the liquid jet, and these data allowed the calculation of a Mach number distribution in the liquid jet plume. Sampling data indicated that there is low frequency unsteadiness along the jet boundary of both jets. There is a core region of low Mach number with steady mass flow that is constant from side to side at a given height. The actual penetration of the liquid jet is about 20 percent higher than that obtained from photographic techniques. The slurry jet showed substantial phase separation. A 30-percent mass-loaded slurry of 1-5-micron silicon dioxide particles mixed with water was injected, and at 30 injector diameters downstream the local loading varied up from a low of 13 percent at the bottom of the plume. The local loading increased as the jet boundary was approached from any direction.