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Microparticle dynamics in electrostatic and flow fields

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Microparticle dynamics in electrostatic and flow fieldsby Sheng Chen.
作者:	Chen, Sheng.
出版者:	Singapore :Springer Nature Singapore :2023.
面頁冊數:	xix, 138 p. :ill. (some col.), digital ;24 cm.
附註:	"Doctoral thesis accepted by Tsinghua University, Beijing, China."
Contained By:	Springer Nature eBook
標題:	Electrostatics.
電子資源:	https://doi.org/10.1007/978-981-16-0843-8
ISBN:	9789811608438$q(electronic bk.)

Microparticle dynamics in electrostatic and flow fields
Chen, Sheng.

Microparticle dynamics in electrostatic and flow fields[electronic resource] /by Sheng Chen. - Singapore :Springer Nature Singapore :2023. - xix, 138 p. :ill. (some col.), digital ;24 cm. - Springer theses,2190-5061. - Springer theses..

"Doctoral thesis accepted by Tsinghua University, Beijing, China."

Introduction -- A Fast Discrete Element Method for Adhesive particles -- Agglomeration of microparticles in homogenous isotropic turbulence -- Migration of cloud of low -- Reynolds-number particles with Coulombic and hydrodynamic interactions -- Deposition of Microparticles with Coulomb repulsion -- Deposition of charged micro-particles on ﬁbers: clogging phenomenon -- Conclusions and perspective.

This thesis proposes new approaches for modelling contacting interactions and electrostatic interactions between microparticles in the framework of the discrete element method and presents a systematic investigation on the agglomeration, migration and deposition of microparticles in presence of electrostatic and flow fields. It reports an exponential-form scaling for the size distribution of early-stage agglomerates in homogeneous isotropic turbulence and formulate the agglomeration and deagglomeration rates. The evolution of spherical clouds of charged particles that migrate under the action of an external electrostatic field is then investigated. Scaling laws of cloud radius and particle number density are obtained by solving a continuum convection equation. Finally, it investigates the deposition of charged particles on a flat plane and fibers. A dimensionless adhesion parameter is constructed to predict the structure of deposits. The temporal evolution of the deposit structure, particle capture efficiency, and the pressure drop are displayed with varying values of Coulomb repulsion and adhesion magnitudes.

ISBN: 9789811608438$q(electronic bk.)

Standard No.: 10.1007/978-981-16-0843-8doiSubjects--Topical Terms:

208571
Electrostatics.

LC Class. No.: QC571 / .C44 2023

Dewey Class. No.: 537.2

Microparticle dynamics in electrostatic and flow fields
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520 $a This thesis proposes new approaches for modelling contacting interactions and electrostatic interactions between microparticles in the framework of the discrete element method and presents a systematic investigation on the agglomeration, migration and deposition of microparticles in presence of electrostatic and flow fields. It reports an exponential-form scaling for the size distribution of early-stage agglomerates in homogeneous isotropic turbulence and formulate the agglomeration and deagglomeration rates. The evolution of spherical clouds of charged particles that migrate under the action of an external electrostatic field is then investigated. Scaling laws of cloud radius and particle number density are obtained by solving a continuum convection equation. Finally, it investigates the deposition of charged particles on a flat plane and fibers. A dimensionless adhesion parameter is constructed to predict the structure of deposits. The temporal evolution of the deposit structure, particle capture efficiency, and the pressure drop are displayed with varying values of Coulomb repulsion and adhesion magnitudes.
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