Patent ID: 8453997

Claim:
A nozzle for conversion of a single-phase stream of a liquid medium into a supersonic homogenous two-phase gas and liquid medium, comprising: an inlet section that converges along a flow direction for the nozzle, the inlet section having an inner diameter and a multistage draw-down of the inner diameter comprising a cylindrical section and a sharp edge located at an inlet to the cylindrical section; and an outlet section that diverges along the flow direction for the nozzle, the outlet section coupled to the inlet section of the nozzle, the outlet section including a concave portion characterized by a concave profile, a convex portion characterized by a convex profile, and a transition between the concave portion and the convex portion in which the concave profile smoothly transitions to the convex profile, and wherein the cylindrical section is immediately upstream of the outlet section and the inlet section and outlet section are configured such that a critical section of the nozzle in which a velocity of the stream is equal to a velocity of sound in the stream is located in the outlet section.