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采用 DANTEC公司的三维激光动态粒子分析仪 ( Dual PDA)测定了大喷嘴间距同轴对置两流股及四流股撞击后的径向速度分布。实验结果表明不同喷嘴直径及射流速度时大喷嘴间距两流股及四流股撞击后的最大径向速度与射流初速度、喷嘴直径和喷嘴间距有关 ,最大径向速度对应的径向距离与喷嘴直径无关 ,径向速度分布具有相似性。
DANTEC’s three-dimensional laser dynamic particle analyzer (Dual PDA) was used to measure the radial velocity distribution of two nozzles and four nozzles coaxially opposed to each other with large nozzle spacing. The experimental results show that the maximum radial velocity of two-flow and four-flow impingement with different nozzle diameter and jet velocity is related to the jet initial velocity, nozzle diameter and nozzle spacing. The radial distance corresponding to the maximum radial velocity corresponds to the nozzle Irrespective of diameter, the radial velocity distribution has similarities.