Numerical simulation of supersonic condensation flows using Eulerian-Lagrangian and Eulerian wall film models

As a clean and energy-saving natural gas purification separation device, the supersonic separator's internal gas-liquid mechanism needs to be explored. However, complex three-field (gas, droplet, liquid film) two-phase liquid) condensation flow challenges numerical modeling. Most studies are limited tracking phase droplets ignore effects of film change on water vapor removal. In present study, we established novel Eulerian-Lagrangian method coupled with Eulerian wall model study behaviors for enhancement efficiency in separator. The accuracy proposed was validated by three experiments. gas, heat mass transfers separator studied using model. Then, sensitivity analysis carried out, which showed inlet rate qp,in heterogeneous determines maximum thickness. For qp, = 0.001 kg/s, this value is about 85.2 ?m. result also significant improvement proper droplet diameter dp,in, qp,in, pressure pin. pin selected as 2.2 ?m, 0.0015 3 atm, better can obtained removal rate, dew point depression being optimized 100%, 57.4%, 29.1% respectively.