Numerical simulation of the dimensional transformation of atomization in a supersonic aerodynamic atomization dust-removing nozzle based on transonic speed compressible flow

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.

Numerical Simulation of Double-diffusive Dynamical Model of a Solar Pond Considering the Effect of Turbidity and Wind

一个太阳的池溏，典型双 diffusive 系统，是能收集并且存储太阳能的稳定的热来源。当热稳定的条件没在接口满足时，上面、更低的对流地区(UCZ 和 LCZ ) 将侵蚀中间的非对流的地区(NCZ ) ，导致落下或甚至太阳的池溏的热性能的倒塌。风强烈从 UCZ 的乘火车影响 NCZ 的侵蚀。热和盐的双散开从降低对流的地区(LCZ ) 的乘火车在 NCZ 的侵蚀起一个重要作用。池溏里的盐的水的混浊不仅能降低太阳的池溏的热表演，但是在乘火车机制上有效果。在这份报纸，基于与风驱动的狂暴的乘火车模型一起的双 diffusive 模型，太阳的池溏和乘火车机制的热表演上的混浊和外部风等等的效果与数字模拟被分析。关键词太阳的池溏 - 弯屈 - 双散开 - 混浊 - 侵蚀 CLC 数字