Abstract：According to the shortages of both traditional twodimensional design and singlefactor analysis based on experiments or CFD software, the flow
field of gasliquid ejector influenced by multiple factors was simulated by CFD software under four kinds of conditions. The effects of gasliquid flow
rate, length to diameter ratio of mixture pipe and outlet diameter of diffusion chamber on the ejection performance of gasliquid ejector were compared and
analyzed. The optimization was obtained to enhance the ejection performance of gasliquid ejector. The results show that for the specific ejector, when gas
liquid flow rate and outlet diameter of diffusion chamber are increased, pressure drop and wall flow effect are increased with decreased work efficiency.
The suitable gasliquid flow rate is from 0.018 to 0.035, and the suitable outlet diameter of diffusion chamber is from 25 mm to 30 mm. When length to
diameter ratio of mixture pipe is from 1.00 to 1.17, the wall flow effect is little, and the effects of deceleration supercharging and mixed heating are
good. The results show that the appropriate parameters can better meet the requirements of operating characteristics.
2017, Vol. 38 
