Microparticle Dynamics in Electrostatic and Flow Fields

Microparticle Dynamics in Electrostatic and Flow Fields PDF Author: Sheng Chen
Publisher: Springer Nature
ISBN: 9811608431
Category : Technology & Engineering
Languages : en
Pages : 153

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Book Description
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.

Microparticle Dynamics in Electrostatic and Flow Fields

Microparticle Dynamics in Electrostatic and Flow Fields PDF Author: Sheng Chen
Publisher: Springer Nature
ISBN: 9811608431
Category : Technology & Engineering
Languages : en
Pages : 153

Get Book Here

Book Description
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.

Microparticle Dynamics in Electrostatic and Flow Fields

Microparticle Dynamics in Electrostatic and Flow Fields PDF Author: 陈晟
Publisher:
ISBN: 9787302619543
Category : Electrostatics
Languages : en
Pages : 0

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Book Description


Cybernetics and Computing Technology

Cybernetics and Computing Technology PDF Author:
Publisher:
ISBN:
Category : Computers
Languages : en
Pages : 646

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Book Description


Adhesive Particle Flow

Adhesive Particle Flow PDF Author: Jeffery S. Marshall
Publisher: Cambridge University Press
ISBN: 1107032075
Category : Mathematics
Languages : en
Pages : 361

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Book Description
This is targeted at professionals and graduate students working in disciplines where flow of adhesive particles plays a significant role.

Aerospace Engineering Education During the First Century of Flight

Aerospace Engineering Education During the First Century of Flight PDF Author: Barnes Warnock McCormick
Publisher: AIAA
ISBN: 9781563477102
Category : Education
Languages : en
Pages : 938

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Book Description
On 17 December 1903 at Kitty Hawk, NC, the Wright brothers succeeded in achieving controlled flight in a heavier-than-air machine. This feat was accomplished by them only after meticulous experiments and a study of the work of others before them like Sir George Cayley, Otto Lilienthal, and Samuel Langley. The first evidence of the academic community becoming interested in human flight is found in 1883 when Professor J. J. Montgomery of Santa Clara College conducted a series of glider tests. Seven years later, in 1890, Octave Chanute presented a number of lectures to students of Sibley College, Cornell University entitled Aerial Navigation. This book is a collection of papers solicited from U. S. universities or institutions with a history of programs in Aerospace/Aeronautical engineering. There are 69 institutions covered in the 71 chapters. This collection of papers represents an authoritative story of the development of educational programs in the nation that were devoted to human flight. Most of these programs are still in existence but there are a few papers covering the history of programs that are no longer in operation. documented in Part I as well as the rapid expansion of educational programs relating to aeronautical engineering that took place in the 1940s. Part II is devoted to the four schools that were pioneers in establishing formal programs. Part III describes the activities of the Guggenheim Foundation that spurred much of the development of programs in aeronautical engineering. Part IV covers the 48 colleges and universities that were formally established in the mid-1930s to the present. The military institutions are grouped together in the Part V; and Part VI presents the histories of those programs that evolved from proprietary institutions.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1050

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Book Description


Research and Technology Program Digest Flash Index

Research and Technology Program Digest Flash Index PDF Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 794

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Book Description


Research and Technology Program Digest

Research and Technology Program Digest PDF Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 792

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Book Description


Physics of the Atmosphere, Climatology and Environmental Monitoring

Physics of the Atmosphere, Climatology and Environmental Monitoring PDF Author: Robert Zakinyan
Publisher: Springer Nature
ISBN: 3031190122
Category : Science
Languages : en
Pages : 359

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Book Description
This proceedings book presents a discussion by leading scientists and specialists of the latest scientific results, developed methods, technologies and technical means of research and pilot work in the field of geosciences and environmental management. An important task is to familiarize young specialists, teachers, graduate students and students with the current state and the latest world achievements in this field of knowledge. Currently, there is a rapid and significant climate change, which manifests itself not only in global warming, but also in noticeable changes in other atmospheric and climatic characteristics among others.

Micro- and Nanoscale Fluid Mechanics

Micro- and Nanoscale Fluid Mechanics PDF Author: Brian J. Kirby
Publisher: Cambridge University Press
ISBN: 1139489836
Category : Technology & Engineering
Languages : en
Pages : 536

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Book Description
This text focuses on the physics of fluid transport in micro- and nanofabricated liquid-phase systems, with consideration of gas bubbles, solid particles, and macromolecules. This text was designed with the goal of bringing together several areas that are often taught separately - namely, fluid mechanics, electrodynamics, and interfacial chemistry and electrochemistry - with a focused goal of preparing the modern microfluidics researcher to analyse and model continuum fluid mechanical systems encountered when working with micro- and nanofabricated devices. This text serves as a useful reference for practising researchers but is designed primarily for classroom instruction. Worked sample problems are included throughout to assist the student, and exercises at the end of each chapter help facilitate class learning.