关键词: 除雾器, 钩片尺寸, 气液两相流, 数值模拟, 响应曲面法

Abstract: The computational fluid dynamics(CFD) method and the 2-D incompressible, unsteady flow model are used to conduct a numerical simulation of the gas-liquid two-phase flow field inside a corrugated plate demister with hook. The demister performance simulated values and experimental values are compared. By taking advantage of the numerical calculation result, the effect of the hook-length, hook-angles and hook-radiuses on the demister performance are studied based on the response surface method (RSM) combined with the statistical software Design-Expert, and the quadratic polynomial prediction model of the above three impact factors are also derived. The simulation results show that the demister performance simulation values are consistent with the experimental values, which verifies the reliability of the calculation result. Among the factors mentioned above, hook-length, hook-angles, hook-radiuses, square term of hook-length and the interaction of hook-length and hook-angles have the most significant impacts on the response values. Within the size range, the performance achieves the optimal when H=10 mm, β=39.59°, and r=24 mm. In conclusion, the study results are helpful to further improve the design method of the mist eliminator.

Key words: demister, hook dimensions, gas-liquid two-phase flow, numerical simulation, response surface methodology