工程设计学报2025，Vol.32Issue(2)：240-251,12.
基于动网格技术的水动力旋转喷雾降尘装置性能分析
performance analysis of hydrodynamic rotary spray dust reduction device based on moving grid technology
摘要
Abstract
hydrodynamic rotary spray dust reduction device has the advantages of only hydrodynamic drive and good atomization effect,and has been widely used in coal mine underground working face.In order to realize safe,accurate and efficient dust reduction,its performance was analyzed systematically based on dynamic grid technology.The 3D model of the dust reduction device was established by DesignModeler software,and the influence rules of the water axis outlet angle on the outlet speed of water flow and the rotational speed of water axis were analyzed by using the dynamic grid technology.The programming technique of UDF(user-defined function)and the VOF(volume of fluid method)model were used to analyze the variation rules of the axial velocity of fog particles at the mixing outlet and the axial velocity of wind flow in the wind flow inlet with the water axis outlet angle.The results showed that with the increase of water axis outlet angle,the maximum outlet velocity of water flow decreased from 63.19 m/s to 24.97 m/s,and the rotation speed of water axis gradually increased to 1 786.4 r/min;the maximum axial velocity of fog particles at mixing outlet decreased from 39.178 m/s to 10.637 m/s,then to 12.854 m/s,and finally to 8.014 m/s,the velocity uniformity increased firstly and then decreased;the maximum axial velocity of wind flow firstly increased from 0.804 m/s to 1.524 m/s and then decreased to 1.272 m/s,and the velocity uniformity was unchanged firstly and then decreased.When the water axis outlet angle was 45°,the atomization performance of the dust reduction device was the best.The test platform of water axis rotation speed and wind flow axial speed was set up,the correctness of simulation results was verified by experiments.The dust reduction device was applied in the field.The results showed that the reduction rates of total dust and respirable dust in the feed port area of the transfer machine were significantly increased after the adoption of the hydrodynamic rotary spray dust reduction device,both of which reached more than 75%,and the mass concentration of respirable dust in the working place was reduced to 6.31 mg/m3.The research results provide a new idea for creating a safe,healthy and green coal mine production environment.关键词
旋转喷雾/动网格/数值模拟/负压除尘/降尘效率Key words
rotary spray/dynamic mesh/numerical simulation/negative-pressure dust reduction/dust reduction efficiency分类
矿业与冶金引用本文复制引用
关维娟,陈清华,王德俊,江丙友,许曾生..基于动网格技术的水动力旋转喷雾降尘装置性能分析[J].工程设计学报,2025,32(2):240-251,12.基金项目
国家重点研发计划资助项目(2022YFC2503201) （2022YFC2503201）
安徽理工大学芜湖研究院研发专项资金资助项目(ALW2021YF12) （ALW2021YF12）
