文章摘要
徐璇,张斯宏,凡凤仙.声凝并中颗粒间相互作用研究进展[J].声学技术,2019,38(3):241~247
声凝并中颗粒间相互作用研究进展
Research progress on particle interaction in acoustic agglomeration
投稿时间:2018-05-19  修订日期:2018-07-18
DOI:10.16300/j.cnki.1000-3630.2019.03.001
中文关键词: 声凝并|细颗粒物(PM2.5)|声场|颗粒间相互作用|作用机理
英文关键词: acoustic agglomeration|fine particle(PM2.5)|acoustic field|particle interaction|interaction mechanism
基金项目:国家自然科学基金项目(51206113,51776129)、上海市科委科研计划项目(13DZ2260900)
作者单位E-mail
徐璇 上海理工大学能源与动力工程学院, 上海 200093
上海理工大学上海市动力工程多相流动与传热重点实验室, 上海 200093 
 
张斯宏 上海理工大学能源与动力工程学院, 上海 200093
上海理工大学上海市动力工程多相流动与传热重点实验室, 上海 200093 
 
凡凤仙 上海理工大学能源与动力工程学院, 上海 200093
上海理工大学上海市动力工程多相流动与传热重点实验室, 上海 200093 
fanfengxian@hotmail.com 
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中文摘要:
      声凝并是细颗粒物(PM2.5)排放控制的重要技术途径,其通过外加声场作用促进PM2.5发生碰撞凝并,使得颗粒数目减少、粒径增大,从而提高后续除尘装置的效率。对声凝并中颗粒间的相互作用机理,包括同向相互作用、声尾流效应、互辐射压力效应、互散射效应的相关研究进行总结和评述,结合声凝并技术在PM2.5排放控制中的应用,指出已有研究在理论模型和实验观测上存在的问题,进而提出今后的研究应在实验方法上进行创新,发展出能够跟踪微米和亚微米尺度PM2.5颗粒或颗粒团相互作用过程细节信息的实验手段,为理论模型的实验验证提供数据支撑;同时应进一步发展理论模型,从而在模型验证的基础上,充分发挥数值模拟的优势,全面识别声凝并中颗粒间相互作用的动力学行为。
英文摘要:
      Acoustic agglomeration is an important technical approach to control the emission of fine particles (PM2.5). An external acoustic field can promote the particle collision and agglomeration, and make particle number decrease and particle diameter increase, hence the efficiency of the subsequent dust removal device can be improved. The relevant researches on the particle interaction mechanisms in acoustic agglomeration, including orthokinetic interaction, acoustic wake effect, mutual radiation pressure effect and mutual scattering effect are summarized and reviewed in this paper. Combined with the application of acoustic agglomeration technique in emission control of PM2.5, the problems existing in the previous researches on theoretical models and experimental observations are presented. Based on this, a proposal of developing novel experimental approaches, which can track the detailed information of the interaction between micrometer and sub-micrometer sized PM2.5 particles or particle agglomerates should be developed, is put forward in order to provide data support for the experimental verification of the theoretical models in further studies. Meanwhile, the theoretical model should be further developed, thus the dynamical behaviors of particle interaction in acoustic agglomeration can be comprehensively identified by taking full advantage of the numerical simulation on the basis of model validation.
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