Numerical Simulation of the Effect of Non-condensed Gas on the Performance of Steam Ejector
Through taking the air as a non-condensing gas mixed in the steam and the CFD simulation,the directly-contacted condensation phenomenon between steam and supercooled water in the steam ejector was simulated to find that,with the increase of air mass fraction,the axial pressure of mixing section rises and the position of condensation impact moves towards the exit direction,the strength of condensation impact decreases and the ejection effect on supercooled water becomes weakened.As the steam inlet pressure in-creases,the axial pressure in the mixing section and diffuser section decreases and the ejection effect on supercooled water becomes enhanced.
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