首页 | 本学科首页   官方微博 | 高级检索  
     

水平平面声波对重力场中PM2.5颗粒作用的数值模拟及实验研究
引用本文:王春波,李群,陈鸿伟.水平平面声波对重力场中PM2.5颗粒作用的数值模拟及实验研究[J].中国电机工程学报,2007,27(23):18-23.
作者姓名:王春波  李群  陈鸿伟
作者单位:华北电力大学能源与动力工程学院,河北省,保定市,071003
基金项目:国家自然科学基金;华北电力大学校科研和教改项目
摘    要:将空气对PM2.5的阻力特性考虑在内,建立了水平平面声波对重力场中PM2.5颗粒动力学特性影响的数学模型,以探讨声场和重力场双重作用下PM2.5颗粒的运动情况。模拟了整周期时刻和整波长位置平面波声场内压力的分布情况。颗粒在不同初始位置的速度及颗粒在初始位置为整波长位置的位移情况。通过模拟计算发现:颗粒初始位置的不同造成了颗粒初始速度的大小、方向不同;声场的强度、频率是影响颗粒运动的重要条件;颗粒的水平位移和垂直位移的综合结果是颗粒螺旋型下落,这个空间是颗粒碰撞的有效空间。可视化实验验证了模型的可行性。

关 键 词:PM2.5  声波  重力场  运动轨迹  数值模拟  可视化实验
文章编号:0258-8013(2007)23-0018-06
收稿时间:2006-10-08
修稿时间:2007-02-21

Experiments and Numerical Simulation of the PM2.5 Driven by Level Sound Wave in Gravitational Field
WANG Chun-bo,LI Qun,CHEN Hong-wei.Experiments and Numerical Simulation of the PM2.5 Driven by Level Sound Wave in Gravitational Field[J].Proceedings of the CSEE,2007,27(23):18-23.
Authors:WANG Chun-bo  LI Qun  CHEN Hong-wei
Affiliation:School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, Hebei Province, China
Abstract:A model that describes the movement of PM2.5 driven by level sound wave in gravitational field was suggested,and the resistance to PM2.5 brought by air was considered in this model.The pressure distribution during the whole period and the whole wavelength in the sound field were simulated,also including the speed tendency when particle at different positions and its displacement situation when PM2.5 located at the whole wavelength position.From the model some conclusions were drawn:the different initial positions would lead to different speed and orientation to PM2.5;intensity and the frequency of sound field are important factors that affect the movement of particles;the combination of level displacement and vertical displacement would result in spiral movement of PM2.5 and this space is the effective space for collision.Visual experiments verified that the model is suitable.
Keywords:PM2  5
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《中国电机工程学报》浏览原始摘要信息
点击此处可从《中国电机工程学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号