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

作　　者：Tian Zhang Deji Jing Shaocheng Ge Jiren Wang Xiangxi Meng ShuaiShuai Ren 

机构地区：[1]College of Safety Science and Engineering,Liaoning Technical University,Fuxin,China [2]Research Institute of Safety Science and Engineering,Liaoning Technical University,Fuxin,China [3]Thermodynamic Disasters and Control of Ministry of Education,Liaoning Technical University,Fuxin,China [4]Safety and Emergency Management Engineering College,Taiyuan University of Technology,Taiyuan,China

出　　处：《International Journal of Coal Science & Technology》2020年第3期597-610,共14页国际煤炭科学技术学报（英文）

基　　金：Supported by the National Natural Science Foundation of China (NO: 51704146, 51274116, 51704145).

摘　　要：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.

关 键 词：Aerodynamic atomization Dust-removing Laval nozzle Compressible flow field Transonic speed Dimension transform 

分 类 号：O35[理学—流体力学]