关键词: 模拟技术;流体动力学;气体;液体;双相流场

Abstract: The flow field of gas and liquid in a φ150mm rotating-stream-tray (RST) scrubber is
simulated by using computational fluid dynamic (CFD) method. The simulation is based on the
two-equation RNG κ-ε turbulence model, Eulerian multiphase model, mad a real-shape 3D
model with a huge number of meshes. The simulation results include detailed information
about velocity, pressure, volume fraction and so on. Some features of the flow field are
obtained: liquid is atomized in a thin annular zone; a high velocity air zone prevents
water drops at the bottom from flying towards the wall;the pressure varies sharply at the
end of blades and so on. The results will be helpful for structure optimization and
engineering design.

Key words: rotating-stream-tray, two-phase flow field, simulation, computational fluid dynamics