Author: Bahman AbbasiPublisher:
ISBN:
Category : Bubbles
Languages : en
Pages : 218
Book Description
Experimental and Computational Study of Droplet and Bubble Formation
Author: Bahman AbbasiPublisher:
ISBN:
Category : Bubbles
Languages : en
Pages : 218
Book Description
Experimental and Computational Study of Droplet Growth and Detachment Near the Inception Point
Author: Majid MolkiControlled Particle, Droplet and Bubble Formation
Author: D J WedlockPublisher: Butterworth-Heinemann
ISBN: 0080984878
Category : Technology & Engineering
Languages : en
Pages : 413
Book Description
The ability to control particle size distributions and to characterize them once formed is an increasingly important topic in the processing industry. Many standard processing techniques are looked at in this book, but from new and innovative perspectives. Well established techniques such as crystallization and precipitation are covered alongside newer technologies such as sol-gel processing. Formation of products using emulsions, aerosols and polymers covered in this book are used across a wide variety of processing industries and all those involved in the processing of chemicals, food, minerals bioproducts and many other products will find this book an informative reference source.
Droplet Dynamics on Chemically Striped Patterned Surfaces
Author: Hendrik Patrick JansenPublisher:
ISBN: 9789036537094
Category :
Languages : en
Pages : 175
Book Description
Experimental Study of the Method of Bubble Formation in Bubble Chambers
Author: Walter I. GoldburgPublisher:
ISBN:
Category : Bubble chambers
Languages : en
Pages : 16
Book Description
An Experimental and Computational Study of Bouncing and Deformation in Droplet Collision
Author: J. QianScientific and Technical Aerospace Reports
Author: A Computational Study Of Non-Newtonian Droplet Dynamics
Author: Kyle G. MooneyPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Sprays are encountered regularly in many industrial and military applications including inkjets, cooling processes, evaporation processes, catalyzation, coatings, and propulsion chambers. Spray atomization phenomena of Newtonian fluids have received significant academic and industrial research attention, however, the effect of non-Newtonian rheologies on spray formation and downstream droplet behavior has not been as heavily investigated. The aim of this work is to elucidate the effect of non-Newtonian and viscoelastic rheological effects on droplet behavior in the context of secondary atomization and droplet collisions. This study utilizes finite volume computational fluid dynamics (CFD) to recreate droplet fluid physics in a numerical setting to a high accuracy. Droplet collision systems comprised of Newtonian, viscoelastic and shear-thinning rheologies are simulated using a Lagrangian moving-mesh interface tracking method (MMIT). This interface tracking approach provides increased surface curvature accuracy on relatively coarse meshes compared to many Eulerian multiphase methods. Modeling assumptions and interface mesh treatments are validated using existing analytical and experimental comparisons showing good agreement. Interpolation error due to cell deformation is minimized with local topological mesh adaptation and a global element quality optimization algorithm. The fully three dimensional computational study investigates the effect of these non-Newtonian and viscoelastic rheologies on a droplet collision. Here, simulated fluid ligaments exhibit increased stability with greater relative elasticity. By applying the similar simulation techniques to collisions of shear thinning droplets, a simple reduced order viscosity model has been produced, valid within a certain range of Weber number values. Another important atomization phenomenon, secondary breakup, is simulated using a volume of fluids (VOF) based interface capturing method applied to a centroid tracking moving mesh. Here, an axisymmetric CFD study of the wind induced break up of both Newtonian and non-Newtonian droplets is presented with comparisons with experimentally observed results. The numerical implementation is further verified by displaying accurate recreation of rapid micro-scale bubble collapse processes and subsequent jet ejection observed in controlled laboratory settings. The presented simulation results show capability in prediction of both the transient deformation morphology and the time scales in which droplet disintegration occurs.
Fundamentals and Applications of Microfluidics
Author: Nam-Trung NguyenPublisher: Integrated Microsystems
ISBN: 9781630813642
Category : Fluidic devices
Languages : en
Pages : 0
Book Description
Now in its Third Edition, the Artech House bestseller, Fundamentals and Applications of Microfluidics, provides engineers and students with the most complete and current coverage of this cutting-edge field. This revised and expanded edition provides updated discussions throughout and features critical new material on microfluidic power sources, sensors, cell separation, organ-on-chip and drug delivery systems, 3D culture devices, droplet-based chemical synthesis, paper-based microfluidics for point-of-care, ion concentration polarization, micro-optofluidics and micro-magnetofluidics. The book shows how to take advantage of the performance benefits of microfluidics and serves as an instant reference for state-of-the-art microfluidics technology and applications. Readers find discussions on a wide range of applications, including fluid control devices, gas and fluid measurement devices, medical testing equipment, and implantable drug pumps. Professionals get practical guidance in choosing the best fabrication and enabling technology for a specific microfluidic application, and learn how to design a microfluidic device. Moreover, engineers get simple calculations, ready-to-use data tables, and rules of thumb that help them make design decisions and determine device characteristics quickly. addressed at the design stage to reduce the risk of failures in the field is presented. The book includes technical details of all state-of-the-art Li-on energy storage subsystems and their requirements, and provides a system designer a single resource detailing all of the common issues navigated when using Li-ion batteries to reduce the risk of field failures. The book details the various industry standards that are applicable to the subsystems of Li-ion energy storage systems and how the requirements of these standards may impact the design of their system. Checklists are included to help readers evaluate their own battery system designs and identify gaps in the designs that increase the risk of field failures. The book is packed with numerous examples of issues that have caused field failures and how a proper design/assembly process could have reduced the risk of these failures.
Effect of Surfactant Transport on the Mobility of Bubbles in Liquids
Author: Ravichandra PalaparthiPublisher:
ISBN:
Category : Bubbles
Languages : en
Pages : 368
Book Description