Micro and Nanoflows

Micro  and Nanoflows

This book describes physical, mathematical and experimental methods to model flows in micro- and nanofluidic devices.

Author: Valery Ya. Rudyak

Publisher: Springer

ISBN: 9783319755236

Category: Science

Page: 241

View: 681

This book describes physical, mathematical and experimental methods to model flows in micro- and nanofluidic devices. It takes in consideration flows in channels with a characteristic size between several hundreds of micrometers to several nanometers. Methods based on solving kinetic equations, coupled kinetic-hydrodynamic description, and molecular dynamics method are used. Based on detailed measurements of pressure distributions along the straight and bent microchannels, the hydraulic resistance coefficients are refined. Flows of disperse fluids (including disperse nanofluids) are considered in detail. Results of hydrodynamic modeling of the simplest micromixers are reported. Mixing of fluids in a Y-type and T-type micromixers is considered. The authors present a systematic study of jet flows, jets structure and laminar-turbulent transition. The influence of sound on the microjet structure is considered. New phenomena associated with turbulization and relaminarization of the mixing layer of microjets are discussed. Based on the conducted experimental investigations, the authors propose a chart of microjet flow regimes. When addressing the modeling of microflows of nanofluids, the authors show where conventional hydrodynamic approaches can be applied and where more complicated models are needed, and they analyze the hydrodynamic stability of the nanofluid flows. The last part of the book is devoted the statistical theory of the transport processes in fluids under confined conditions. The authors present the constitutive relations and the formulas for transport coefficients. In conclusion the authors present a rigorous analysis of the viscosity and diffusion in nanochannels and in porous media.
Categories: Science

Gas Flows in Microsystems

Gas Flows in Microsystems

[CrossRef] Rudyak, V.Y.; Aniskin, V.M.; Maslov, A.A.; Minakov, A.V.; Mironov, S.G. Micro- and Nanoflows. Modeling and Experiment; Thess, A., Ed.; Fluid Mechanics and Its Applications; Springer International Publishing: Cham, Switzerland ...

Author: Lucien Baldas

Publisher: MDPI

ISBN: 9783039215423

Category: Technology & Engineering

Page: 220

View: 813

The last two decades have witnessed a rapid development of microelectromechanical systems (MEMS) involving gas microflows in various technical fields. Gas microflows can, for example, be observed in microheat exchangers designed for chemical applications or for cooling of electronic components, in fluidic microactuators developed for active flow control purposes, in micronozzles used for the micropropulsion of nano and picosats, in microgas chromatographs, analyzers or separators, in vacuum generators and in Knudsen micropumps, as well as in some organs-on-a-chip, such as artificial lungs. These flows are rarefied due to the small MEMS dimensions, and the rarefaction can be increased by low-pressure conditions. The flows relate to the slip flow, transition or free molecular regimes and can involve monatomic or polyatomic gases and gas mixtures. Hydrodynamics and heat and mass transfer are strongly impacted by rarefaction effects, and temperature-driven microflows offer new opportunities for designing original MEMS for gas pumping or separation. Accordingly, this Special Issue seeks to showcase research papers, short communications, and review articles that focus on novel theoretical and numerical models or data, as well as on new experimental results and technics, for improving knowledge on heat and mass transfer in gas microflows. Papers dealing with the development of original gas MEMS are also welcome.
Categories: Technology & Engineering

Proceedings of 2nd International Conference on Fluid Dynamics Aerodynamics 2017

Proceedings of 2nd International Conference on Fluid Dynamics   Aerodynamics 2017

Therefore, modeling the nanofluid flows is the fashion direction in fluid mechanics. However, the standard approaches are ... The main subjects of his research are the nanofluids transport properties and modelling micro- and nanoflows.

Author: ConferenceSeries

Publisher: ConferenceSeries

ISBN:

Category:

Page: 79

View: 685

October 19-20, 2017 Rome, Italy key Topics : Fluid Dynamics, Numerical Methods, CFD Methodology, Geophysical Fluid Dynamics, Heat Transfer System, Aerodynamics, Aero-acoustics, Magneto Hydrodynamics, Aerodynamics Simulations, Biofluid Mechanics, Thermo-Fluid Dynamics, Micro Fluidics,
Categories:

Nanophysics Nanomaterials Interface Studies and Applications

Nanophysics  Nanomaterials  Interface Studies  and Applications

15.6 Conclusions A review of the analytical solutions for the pressure-driven Poiseuille flow between the parallel ... Experimental measurements of viscosities of the microfluids and nanofluids in viscosimeters are based on accepted ...

Author: Olena Fesenko

Publisher: Springer

ISBN: 9783319564227

Category: Science

Page: 880

View: 308

This book presents some of the latest achievements in nanotechnology and nanomaterials from leading researchers in Ukraine, Europe, and beyond. It features selected peer-reviewed contributions from participants in the 4th International Science and Practice Conference Nanotechnology and Nanomaterials (NANO2016) held in Lviv, Ukraine on August 24-27, 2016. The International Conference was organized jointly by the Institute of Physics of the National Academy of Sciences of Ukraine, Ivan Franko National University of Lviv (Ukraine), University of Tartu (Estonia), University of Turin (Italy), and Pierre and Marie Curie University (France). Internationally recognized experts from a wide range of universities and research institutions share their knowledge and key results on topics ranging from nanooptics, nanoplasmonics, and interface studies to energy storage and biomedical applications.
Categories: Science

Microflows and Nanoflows

Microflows and Nanoflows

Asymptotic theory of the Boltzmann system for a steady flow of a slightly rarefied gas with a finite Mach number: General theory. Eur. J. Mech., B/Fluids, 19:325. Sone, Y., Fukuda, T., Hokazono, T., and Sugimoto, H. (2001). Experiment ...

Author: George Karniadakis

Publisher: Springer Science & Business Media

ISBN: 9780387286761

Category: Mathematics

Page: 818

View: 651

Subject area has witnessed explosive growth during the last decade and the technology is progressing at an astronomical rate. Previous edition was first to focus exclusively on flow physics within microdevices. It sold over 900 copies in North America since 11/01. New edition is 40 percent longer, with four new chapters on recent topics including Nanofluidics.
Categories: Mathematics

Microfluidic Devices in Nanotechnology

Microfluidic Devices in Nanotechnology

Artificial intelligence can be utilized within the scope of hybrid modeling and provides the tools for reducing the ... N. Hydrodynamic focusing in microchannels under consideration of diffusive dispersion: theories and experiments.

Author: Challa S. S. R. Kumar

Publisher: John Wiley & Sons

ISBN: 1118029224

Category: Technology & Engineering

Page: 360

View: 603

Nanotechnology, especially microfabrication, has been affecting every facet of traditional scientific disciplines. The first book on the application of microfluidic reactors in nanotechnology, Microfluidic Devices in Nanotechnology provides the fundamental aspects and potential applications of microfluidic devices, the physics of microfluids, specific methods of chemical synthesis of nanomaterials, and more. As the first book to discuss the unique properties and capabilities of these nanomaterials in the miniaturization of devices, this text serves as a one-stop resource for nanoscientists interested in microdevices.
Categories: Technology & Engineering

Scour and Erosion

Scour and Erosion

This simulation validates SPH-ALE method for the study of flow through a rough pipe wall as it the case for a HET. The study of flow through a ... An experimental study and modelling of roughness effects on laminar flow in microchannel.

Author: Liang Cheng

Publisher: CRC Press

ISBN: 9781138027329

Category: Technology & Engineering

Page: 818

View: 540

The 7th International Conference on Scour and Erosion (ICSE 2014) was organised by the School of Civil, Environmental and Mining Engineering and the Centre for Offshore Foundation Systems at the University of Western Australia under the guidance of the Technical Committee 213 for Scour and Erosion of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE). This biennial conference draws together leading academics, scientists and engineers engaged in scour and erosion research to present and exchange their latest scientific findings. These proceedings, together with the six previous proceedings dating from 2002, present a rare collection of technical and scientific developments in scour and erosion research which have been established over the last 12 years. This book includes state-of-the-art papers in scour and erosion from ICSE 2014, covering the 6 themes of: internal erosion, sediment transport, advanced numerical modelling of scour and erosion, terrestrial scour and erosion, river/bridge scour and erosion, and marine scour and erosion. The proceedings include 5 keynote lectures from world leading researches cutting across the themes of scour and erosion, together with 87 peer-reviewed papers from 19 countries. This book is ideal for researchers and industry working at the forefront of scour and erosion, both with application to rivers and marine operations.
Categories: Technology & Engineering

Geochemistry of Geologic CO2 Sequestration

Geochemistry of Geologic CO2 Sequestration

Transp Porous Media 94;48-504 Rangel-German ER, Kovscek AR (2006) A micromodel investigation of two-phase matrix-fracture ... Europhys Lett 89:44001 Saadatfar M. Sheppard A, Knackstedt M (2006) Grain partitioning and its applications.

Author: Donald J. DePaolo

Publisher: Walter de Gruyter GmbH & Co KG

ISBN: 9781501508073

Category: Science

Page: 553

View: 382

Volume 77 of Reviews in Mineralogy and Geochemistry focuses on important aspects of the geochemistry of geological CO2 sequestration. It is in large part an outgrowth of research conducted by members of the U.S. Department of Energy funded Energy Frontier Research Center (EFRC) known as the Center for Nanoscale Control of Geologic CO2 (NCGC). Eight out of the 15 chapters have been led by team members from the NCGC representing six of the eight partner institutions making up this center - Lawrence Berkeley National Laboratory (lead institution, D. DePaolo - PI), Oak Ridge National Laboratory, The Ohio State University, the University of California Davis, Pacific Northwest National Laboratory, and Washington University, St. Louis.
Categories: Science

Nanofluidics

Nanofluidics

[1] Fox, R. W., and A. T. McDonald, Introduction to Fluid Mechanics, New York: John Wiley & Sons, 1999. ... [8] Karniadakis, G., A. Beskok, and N. Aluru, Microflows and Nanoflows: Fundamentals and Simulation (Interdisciplinary Applied ...

Author: Patrick Abgrall

Publisher: Artech House

ISBN: 9781596933514

Category: Technology & Engineering

Page: 204

View: 134

Taking you to the forefront of the emerging field of Nanofluidics, this cutting-edge book details the physics and applications of fluid flow in nanometer scale channels. You gain a solid understanding of the fundamental aspects of transport processes and force interactions in microscale. Moreover, this unique resource presents the latest research on nanoscale transport phenomena. You find a comprehensive overview of fabrication technologies for nanotechnologies, including detailed technology recipes and parameters. The book concludes with a look at future trends and the possible directions this new field could take.
Categories: Technology & Engineering

Slow Viscous Flows

Slow Viscous Flows

Fluid Dyn. Res. 38, 274–294. [427] Kim, S. & Karrila, S.J. 1991 Microhydrodynamics: Principles and Selected Applications. Butterworth-Heinemann. [viii, xxiii] Kim, M.-U. 1979 Slow viscous flow due to the motion of a sphere on the axis ...

Author: P. N. Shankar

Publisher: Imperial College Press

ISBN: 9781860947803

Category: Science

Page: 563

View: 244

Provides an account of internal, external and unsteady slow viscous flows, including the advances. This book shows how the method of eigenfunctions, in conjunction with least squares, can be used to solve problems of low Reynolds number flows, including three-dimensional internal and unsteady flows.
Categories: Science