Numerical Study of the Effect of Nozzle Configuration on Supersonic Condensation Jet

Three-dimensional steady method was employed to simulate the condensation process of supersonic steam condensed into subcooled water pool by embedding the phase change model based on thermal equilibrium into Ansys platform. By comparing the shape of steam plume between numerical and experimental results, good agreements were observed. When steam pressure, water temperature and the diameter of nozzle throat were 300 kPa, 20℃ and 8 mm, the diameters of nozzle exit were set as 8.8, 9.6, 10.4 11.2 and 12.0 mm, respectively. The effect of nozzle pressure ratio on the shape of steam plume and the internal flow process was revealed.