基于CFD的喷射分配器结构优化研究

基于计算流体力学（CFD）对喷射分配器进行了数值模拟与结构优化研究，首先进行了模型验证，确保所选流体力学模型的可靠性，其次对喷射分配器的原始构型进行模拟，得到其压降、分布不均匀度以及分配器下方液相喷洒面积等性能参数。在此基础上，对分配器进气孔数目、开孔位置、喷嘴结构及尺寸进行优化，改进后的分配器的分布不均匀度比原始构型降低57.96%，分配器下方液相喷洒面积增大179.05%，压降增大10%，抗塔板倾斜能力提高2%。结果表明，改进的分配器综合性能优于原始构型。

STRUCTURAL OPTIMIZATION OF SPRAY DISTRIBUTOR BY CFD METHOD

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.