[1]袁竹林,李伟力,魏星,等.细微颗粒在行波和驻波声场中运动特性数值实验[J].东南大学学报(自然科学版),2005,35(1):140-144.[doi:10.3969/j.issn.1001-0505.2005.01.030]
 Yuan Zhulin,Li Weili,Wei Xing,et al.Numerical simulation of moving behavior of PM2.5 in sound wave field[J].Journal of Southeast University (Natural Science Edition),2005,35(1):140-144.[doi:10.3969/j.issn.1001-0505.2005.01.030]
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细微颗粒在行波和驻波声场中运动特性数值实验()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
35
期数:
2005年第1期
页码:
140-144
栏目:
环境科学与工程
出版日期:
2005-01-20

文章信息/Info

Title:
Numerical simulation of moving behavior of PM2.5 in sound wave field
作者:
袁竹林 李伟力 魏星 凡凤仙 沈湘林
东南大学洁净煤发电及燃烧技术教育部重点实验室,南京 210096
Author(s):
Yuan Zhulin Li Weili Wei Xing Fan Fengxian Shen Xianglin
Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
声波作用 细粒子(PM2.5) 汇聚现象 除尘
Keywords:
sound wave effect fine particles(PM2.5) converging phenomenon dust remove
分类号:
X511
DOI:
10.3969/j.issn.1001-0505.2005.01.030
摘要:
采用数值实验方法对平面行波和驻波声场中悬浮细粒子的受力和运动特性进行了研究.通过对声场中细粒子(PM2.5)受力计算和跟踪声场中不同位置细粒子的运动轨迹,发现行波和驻波声场均能够使气体中的悬浮细微颗粒发生运动并产生汇聚.2种声场所引起的细粒子运动特性存在较大差别,行波声场可使气体中原来静止的悬浮细粒子发生顺声波而下、逆声波而上以及原处振动等运动方式,而驻波声场只能使波节点以外的细粒子发生振动.
Abstract:
Numerical method was used to study the moving behavior of fine particles in the moving and standing wave sound fields. Through analysing the force acting on the particles and tracing the trajectories of particles at different original position in the sound fields, it is found that the sound waves can cause remarkable movement and convergence of PM2.5s. The effects of moving wave sound and standing wave sound are different. The PM2.5s in moving wave sound field can move either along the sound wave direction, or against the sound wave direction as well as vibrate at original position. However the PM2.5s in standing wave sound field can only vibrate or remain static.

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备注/Memo

备注/Memo:
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2002CB211604).
作者简介: 袁竹林(1955—),男,博士,教授,博士生导师,zlyuan@sina.com.
更新日期/Last Update: 2005-01-20