弹簧气孔套进气段流场可视化分析

采用CFX软件建立弹簧气孔套进气段流道结构有限元模型，并用计算流体力学（CFD）解析流道速度场分布、压力场分布、出口流量变化曲线。模拟可视化分析结果表明：将弹簧气孔套阀杆锥面与柱面直角过渡改为圆弧（R为0.3 mm）过渡，消除了流道转折处涡流；流道出口流量增大22.5%，至1.74×10-4 kg·s-1，最大轴向气动力降低29.4%，至1.2 N。;The finite element model of flow field in air inlet section of spring vent was set up by CFX software.The velocity field distribution，pressure field distribution and air outlet flow curve of the channel flow field were analyzed by computational fluid dynamics（CFD）.The simulation results show that the right-angle transition of stem conical and cylindrical changed to arc transition（R＝0.3 mm），eliminating the channel bend vortex，outlet flow rate increased by 22.5%，increased to 1.74×10-4 kg·s-1，the maximum axial aerodynamic force was reduced by 29.4%，about 1.2 N