Dehydration of low-pressure gas using supersonic separation: Experimental investigation and CFD analysis

The shockwave position is found in the range of 0.3-0.5 of non-dimensional nozzle length. The positions of both shockwave and initiation of condensation are shifted toward the exit side when the nozzle pressure ratio decreases. Reducing the pressure ratio from 0.8 to 0.6 will enhance the dehydration efficiency by about 5%.