导叶结构对直流导叶式气液分离器性能的影响

为了得到高效低阻的液滴分离装置，设计了不同结构的直流导叶式气液分离器模型，采用FLUENT软件中RNG K-ε湍流模型和离散颗粒(DPM)模型，对不同导叶结构的分离器内流场进行模拟，得到了导叶结构参数对分离器内的压 降特性、速度分布、以及不同粒径分离效率的影响规律。结果表明：导向叶片个数增加或者出口角的减小都能使分离器 分离效率显著提高，但是分离器压降也会增大；随着颗粒粒径的增大，分离效率升高，当粒径大于35 μm时，分离效率几 乎达到100%；导向叶片个数越多，叶片出口角越小，分离效率越高。数值模拟结果为设计低阻、高效的分离器提供了理 论依据。

Effect of Guide Vane Structure on Performance of Axial Gas-Liquid Separator

In order to obtain high efficiency and low resistance droplet separation device, different structures of axial vane type gas-liquid separators were designed. The fluent RNG K-E model and discrete particle model ( DPM) were used to simulate the flow field inside the axial vane type gas-liquid separators, which obtained the influence rule of the guide vane structure parameters on the velocity distribution, the pressure drop and the separation efficiency. The results showed that the increase of the number of guide vanes and the decrease of the outlet angle could both improve the separation efficiency of the separator, but the pressure drop would increase as well; The separation efficiency raised with the increase of particle size, when the particle size was greater than 35 ym, the separation efficiency almost reached 100% , and the more the number of guide vanes and the smaller the outlet angle of the blade, the higher the separation efficiency. The simulation results provide theoretical basis for the design of low resistance and high efficiency separators.