To simulate the transonic atomization jet process in Laval nozzles, to test the law of droplet atomization and distribution, to find a method of supersonic atomization for dust-removing nozzles, and to improve nozzle efficiency, the finite element method has been used in this study based on the COMSOL computational fluid dynamics module. The study results showed that the process cannot be realized alone under the two-dimensional axisymmetric, three-dimensional and three-dimensional symmetric models, but it can be calculated with the transformation dimension method, which uses the parameter equations generated from the two-dimensional axisymmetric flow field data of the three-dimensional model. The visualization of this complex process, which is difficult to measure and analyze experimentally, was realized in this study. The physical process, macro phenomena and particle distribution of supersonic atomization are analyzed in combination with this simulation. The rationality of the simulation was verified by experiments. A new method for the study of the atomization process and the exploration of its mechanism in a compressible transonic speed flow field based on the Laval nozzle has been provided, and a numerical platform for the study of supersonic atomization dust removal has been established.

为了模拟拉瓦尔喷嘴中的跨音速雾化射流过程，测试液滴雾化和分布规律，寻找除尘喷嘴的超音速雾化方法，并提高喷嘴效率，本研究采用了有限元方法。基于COMSOL计算流体动力学模块。研究结果表明，该过程不能在二维轴对称，三维和三维对称模型下单独实现，而是可以使用转换维数方法进行计算，该方法使用二维维数方程生成的参数方程式三维模型的轴对称流场数据。在这项研究中实现了这一复杂过程的可视化，这很难通过实验来测量和分析。物理过程 结合此模拟分析了超音速雾化的宏观现象和粒子分布。通过实验验证了仿真的合理性。提供了一种基于拉瓦尔喷嘴的研究可压缩跨音速流场中雾化过程及其机理的新方法，并建立了研究超音速雾化除尘的数值平台。