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Full-Text Articles in Engineering

A Microfluidic Mixer Utilizing Electrokinetic Relay Switching And Asymmetric Flow Geometries, Yiou Wang, Jiang Zhe, Prashanta Dutta, Benjamin Chung Apr 2015

A Microfluidic Mixer Utilizing Electrokinetic Relay Switching And Asymmetric Flow Geometries, Yiou Wang, Jiang Zhe, Prashanta Dutta, Benjamin Chung

Dr. Jiang Zhe

No abstract provided.


Centrifugal Effects In Inflated, Rotating Bias-Ply Tires, Joseph Walter Apr 2015

Centrifugal Effects In Inflated, Rotating Bias-Ply Tires, Joseph Walter

Dr. Joseph D. Walter

An equation is derived which governs the dynamic equilibrium contour taken by an inflated and rotating, but otherwise unloaded, bias-ply tire. This equation, which is in the form of a hyperelliptic integral, is based on the membrane theory of shells and the netting analysis of composite materials. Results are obtained for the meridional geom etry of a typical two-ply automobile tire, which are in reasonable agreement with ex perimental measurements. This integral, which describes the dynamic equilibrium contour of the tire, is then used to obtain an algebraic cord load formula. The formula shows how the cord tension at any …


First Order Approximation Of The Stability Regions Of Time Delay Systems, Rifat Sipahi, Silviu-Julian Niculescu Mar 2015

First Order Approximation Of The Stability Regions Of Time Delay Systems, Rifat Sipahi, Silviu-Julian Niculescu

Rifat Sipahi

No abstract provided.


A Multi-Physics Model For Solid Oxide Iron-Air Redox Flow Battery: Simulation Of Discharge Behavior At High Current Density, Meng Guo, Xuan Zhao, Ralph White, Kevin Huang Feb 2015

A Multi-Physics Model For Solid Oxide Iron-Air Redox Flow Battery: Simulation Of Discharge Behavior At High Current Density, Meng Guo, Xuan Zhao, Ralph White, Kevin Huang

Kevin Huang

A rigorous physics-based mathematical model for a solid oxide iron-air redox flow battery system is presented in this paper. The modeled flow battery system combines a Fe-FeO redox couple as the energy storage unit and a regenerative solid oxide fuel cell as the electrical functioning unit in a 2D axial symmetric geometry. This model was developed from fundamental theories of reaction engineering in which basic transport phenomena and chemical/electrochemical kinetics are included. The model shows good agreement with the experimental data. Simulation results for the chemical, electrochemical and transport behavior of the battery are discussed.


The Local Index Formula In Noncommutative Geometry Revisited, Alan Carey, John Phillips, Adam Rennie, Fyodor Sukochev Nov 2013

The Local Index Formula In Noncommutative Geometry Revisited, Alan Carey, John Phillips, Adam Rennie, Fyodor Sukochev

Associate Professor Adam Rennie

In this review we discuss the local index formula in noncommutative geomety from the viewpoint of two new proofs are partly inspired by the approach of Higson especially that in but they differ in several fundamental aspedcts, in particular they apply to semifinite spectral triples for a *s-subalgebra A of a general semifinite von Neumann algebra. Our proofs are novel even in the setting of the original theorem and reduce the hypotheses of the theorem to those necessary for its statement. These proofs rely on the introduction of a function valued cocycle which is 'almost' a (b, B)-cocycle in the …


Semi-Finite Noncommutative Geometry And Some Applications, Alan L. Carey, Adam C. Rennie, John Phillips Nov 2013

Semi-Finite Noncommutative Geometry And Some Applications, Alan L. Carey, Adam C. Rennie, John Phillips

Associate Professor Adam Rennie

These notes are a summary of talks given in Shonan, Japan in February 2008 with modifications from a later series of talks at the Hausdorff Institute for Mathematics in Bonn in July 2008 and at the Erwin Schr¨odinger Institute in October 2008. The intention is to give a short discussion of recent results in noncommutative geometry (NCG) where one extends the usual point of view of [22] by replacing the bounded operators B(H) on a Hilbert space H by certain sub-algebras; namely semi-finite von Neumann algebras. These are weakly closed subalgebras of the bounded operators on a Hilbert space that …


Bulk And Surface Field-Induced Optical Rectification From (11n) Zincblende Crystals In A Quasireflection Geometry, Krunal Radhanpura, Stuart Hargreaves, Roger A. Lewis Nov 2011

Bulk And Surface Field-Induced Optical Rectification From (11n) Zincblende Crystals In A Quasireflection Geometry, Krunal Radhanpura, Stuart Hargreaves, Roger A. Lewis

Roger A. Lewis

IIn a previous article, we presented a generalized expression for second-order bulk and third-order surface-field–induced optical rectification for zincblende 4̅ 3m crystal faces with arbitrary Miller indices (hkl) along with experimental data for (11N)A and (11N)B GaAs in transmission geometry. We now expand the results to quasireflection geometry, with angles of incidence and detection of 45°. While this geometry introduces a p-polarized signal component due to mechanisms other than optical rectification, such as photocarrier acceleration by the surface depletion field, the azimuthal angle dependence of the optical rectification component yields further insight into the crystallographic orientation and surface properties of …