IN two previous notes1, Prof. Max Born and I have shown that one can obtain a theory of superconductivity by taking account of the fact that the interaction of the electrons with the ionic lattice is appreciable only near the boundaries of Brillouin zones, and particularly strong near the corners of these. This leads to the criterion that the metal should be superconductive if a set of corners of a Brillouin zone is lying very near the Fermi surface, considered as a sphere, which limits the region in the momentum space completely filled with electrons.

On the theory of superconductivity

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Numerical Heat Transfer And Fluid Flow

Capillarity and Wetting Phenomena: Drops, Bubbles, Pearls, Waves

This article reviews acoustic microfiuidics: the use of acoustic fields, principally ultrasonics, for application in microfiuidics. Although acoustics is a classical field, its promising, and indeed perplexing, capabilities in powerfully manipulating both fluids and particles within those fluids on the microscale to nanoscale has revived interest in it. The bewildering state of the literature and ample jargon from decades of research is reorganized and presented in the context of models derived from first principles. This hopefully will make the area accessible for researchers with experience in materials science, fluid mechanics, or dynamics. The abundance of interesting phenomena arising from nonlinear interactions in ultrasound that easily appear at these small scales is considered, especially in surface acoustic wave devices that are simple to fabricate with planar lithography techniques common in microfluidics, along with the many applications in microfluidics and nanofluidics that appear through the literature.

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Microscale acoustofluidics: Microfluidics driven via acoustics and ultrasonics

Localized fluid flow measurements with an He-Ne laser spectrometer

Derivation of drag and lift force and torque coefficients for non-spherical particles in flows

Volume of fluid methods for immiscible-fluid and free-surface flows

© B. Andersson, R. Andersson, L. Hakansson, M. Mortensen, R. Sudiyo, B. vanWachem, L. Hellstr ¨om 2012. Computational fluid dynamics, CFD, has become an indispensable tool for many engineers. This book gives an introduction to CFD simulations of turbulence, mixing, reaction, combustion and multiphase flows. The emphasis on understanding the physics of these flows helps the engineer to select appropriate models to obtain reliable simulations. Besides presenting the equations involved, the basics and limitations of the models are explained and discussed. The book combined with tutorials, project and power-point lecture notes (all available for download) forms a complete course. The reader is given hands-on experience of drawing, meshing and simulation. The tutorials cover flow and reactions inside a porous catalyst, combustion in turbulent non-premixed flow, and multiphase simulation of evaporation spray respectively. The project deals with design of an industrial-scale selective catalytic reduction process and allows the reader to explore various design improvements and apply best practice guidelines in the CFD simulations.

/pdf/computational-fluid-dynamics-for-engineers-1gxfagfv6m.pdf

Berend van Wachem

Papers

Derivation of drag and lift force and torque coefficients for non-spherical particles in flows

Volume of fluid methods for immiscible-fluid and free-surface flows

Computational Fluid Dynamics for Engineers

Derivation and validation of a novel implicit second-order accurate immersed boundary method

Modeling particle‐laden flows: A research outlook