Hao Chen, Tao Wang , Zhongyang Luo , Dong Zhou, Mengshi Lu, Mingchun He, Mengxiang Fang, Kefa Cen

  • State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

Received: September 1, 2016
Revised: November 28, 2016
Accepted: December 6, 2016
Download Citation: ||https://doi.org/10.4209/aaqr.2016.09.0378  

  • Download: PDF

Cite this article:
Chen, H., Wang, T., Luo, Z., Zhou, D., Lu, M., He, M., Fang, M. and Cen, K. (2017). Agglomeration Kernel of Bipolar Charged Particles in the Presence of External Acoustic and Electric Fields. Aerosol Air Qual. Res. 17: 857-866. https://doi.org/10.4209/aaqr.2016.09.0378


  • Collision efficiency enlarges when an electric field is applied in acoustic field.
  • Total agglomeration kernel increases with the increasing of SPL.
  • Total agglomeration kernel diminishes as the frequency increases.



A theoretical study on the agglomeration kernel of bipolar charged particles in external fields is presented in order to investigate particle agglomeration under the combined effects of a direct-current (DC) electric field and an acoustic field, while taking into consideration particle collision efficiency. Three agglomeration kernels are considered in our model, namely Coulomb agglomeration, electric agglomeration, and acoustic agglomeration. The model performance is validated by comparing its predictions with the available exact solutions of peculiar cases. Our results indicate that the collision efficiency increases when an electric field is applied simultaneously with an acoustic field. The size of the total agglomeration kernel formed by the three processes listed above increases with the external electric field intensity and the sound pressure level (SPL). Based on this model which includes collision efficiency, the electric and acoustic agglomeration kernels both increase rapidly as the agglomeration nucleus particle size increases, eventually approaching saturation for large diameters. On the other hand, the total agglomeration kernel decreases as the sound frequency increases within the investigated range. The agglomeration kernels of particles with different relative dielectric constants, such as fly ash particles, solid carbon particles and water droplets, are investigated as well.

Keywords: Agglomeration kernel; Collision efficiency; Electric field; Acoustic field

Share this article with your colleagues 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

77st percentile
Powered by
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.