Abstract: The numerical simulation and structural optimization of the spray distributor were studied by CFD method. The verification was conducted to ensure the reliability of the hydrodynamic model, and the basic configuration was simulated to investigate the pressure drop, distribution non-uniformity and liquid spray area below the distributor. On this basis, the number of inlet ports, location of openings, nozzle structure and size were optimized. The distribution non-uniformity of improved distributor is 57.96% lower than the basic configuration, the spraying area below the distributor increases by 179.05%, the resistance to tray tilting improves by 2%, while the pressure drop increases by 10%. The results indicate a better comprehensive performance of the improved distributor than the basic configuration.

Key words: spray distributor, CFD, numerical simulation, structure optimization