【摘要】 空化射流应用逐渐广泛，空化喷嘴作为空化射流最重要的元件，对空化喷嘴的空化性能的优化至关重要。采用正交试验方法对角型空化喷嘴结构参数进行优化。基于L₁₆（4⁵）的正交表，选取喷嘴入口直径，圆柱段直径，圆柱段长度，扩散段长度和扩散角5个参数制定出16组试验方案。通过数值模拟分析每组试验方案的流场情况，以最大速度为参考标准，通过极差分析得到这5个参数对角形喷嘴产生空化的影响顺序，且得到一组最优的喷嘴结构参数。通过Fluent模拟入口压力对最优喷嘴的空化性能的影响。结果表明入口压力越大，则空化程度越显著。更多还原

【Abstract】 The application of cavitation jet is gradually extensive.As the most important component of cavitation jet, cavitation nozzle is crucial to the optimization of cavitation performance of cavitation nozzle.The structural parameters of diagonal cavitation nozzles were optimized by orthogonal test.Based on the orthogonal table of L₁₆（4⁵）,16 test plans were developed by selecting 5 parameters of nozzle inlet diameter, cylinder segment diameter, cylinder segment length, diffusion segment length and diffusion Angle.The flow field of each group of test schemes was analyzed by numerical simulation, and the order of influence of cavitation of the 5 diagonal nozzles was obtained by range analysis with the maximum velocity as the reference standard, and a set of optimal nozzle structure parameters was obtained.The influence of inlet pressure on the cavitation performance of the optimal nozzle was simulated by Fluent.The results show that the higher the inlet pressure is, the more significant the cavitation degree is.更多还原