Thermodynamic consistency of liquid-gas lattice Boltzmann simulations

Lattice Boltzmann simulations have been very successful in simulating liquid-gas and other multi-phase fluid systems. However, the underlying second order analysis of the equation of motion has long been known to be insufficient to consistently derive the fourth order terms that are necessary to represent an extended interface. These same terms are also responsible for thermodynamic consistency, i.e. to obtain a true equilibrium solution with both a constant chemical potential and a constant pressure. In this article we present an equilibrium analysis of non-ideal lattice Boltzmann methods of sufficient order to identify those higher order terms that lead to a lack of thermodynamic consistency. We then introduce a thermodynamically consistent forcing method.Comment: 12 pages, 8 figure

Classes of confining gauge field configurations

We present a numerical method to compute path integrals in effective SU(2) Yang-Mills theories. The basic idea is to approximate the Yang-Mills path integral by summing over all gauge field configurations, which can be represented as a linear superposition of a small number of localized building blocks. With a suitable choice of building blocks many essential features of SU(2) Yang-Mills theory can be reproduced, particularly confinement. The analysis of our results leads to the conclusion that topological charge as well as extended structures are essential elements of confining gauge field configurations.Comment: 18 pages, 16 figures, several sections adde

The pupillary response of cephalopods

This paper provides the first detailed description of the time courses of light-evoked pupillary constriction for two species of cephalopods, Sepia officinalis (a cuttlefish) and Eledone cirrhosa (an octopus). The responses are much faster than hitherto reported, full contraction in Sepia taking less than 1 s, indicating it is among the most rapid pupillary responses in the animal kingdom. We also describe the dependence of the degree of pupil constriction on the level of ambient illumination and show considerable variability between animals. Furthermore, both Sepia and Eledone lack a consensual light-evoked pupil response. Pupil dilation following darkness in Sepia is shown to be very variable, often occurring within a second but at other times taking considerably longer. This may be the result of extensive light-independent variations in pupil diameter in low levels of illumination

Nurses Alumni Association Bulletin, Fall 2008

Meetings and Annual Luncheon Table of Contents Officers for 2008-2009 President\u27s Message Treasurer\u27s Financial Report Alumni Scholarship Funds and Endowment Fund Resume of Minutes Alumni Office News Committee Reports Annual Giving Contributors Janet C. Hindson Award Award Qualifications Janet C. Hindson Recipient and Nominees Recipient\u27s Acceptance Speech Ode to Sally Sally\u27s Appreciation News About and From Our Graduates Happy Birthday Interview with a Nurse Memories Fiftieth Anniversary Class 2008 Luncheon Attendees Luncheon Photos In Memoriam Class News~ 2008 Additional Information Application For Nurses Scholarship Fund Application Application For Certification Application For Relief Fund Benefits Hotels Campus Map Note

Nurses Alumni Association Bulletin, Fall 2005

2005 - 2006 Meeting Date Calendar 2006 Annual Luncheon & Meeting Notice Officers, Committee Chairs, Satellite and Volunteers Bulletin Publication Committee The President\u27s Message Treasurer\u27s Report Resume of Minutes Office News Committee Reports Relief Trust Fund Satellite - Harrisburg Satellite Area Bulletin Scholarship Nominating Social Development Annual Giving Janet C. Hindson Award Recipients and Nominees Janet C. Hindson Award Qualifications Quotes from Janet C. Hindson\u27s Recipients Letters Quotes from Letters on Nursing at Jefferson Biography of Lenora Schwartz, \u2766 News About Graduates Memories Odds & Ends How I got my Education U.S. Cadet Nurse Corps Normandy Nightingales Weathered War\u27s Worst Happy Birthday, To Be 80 or more 50th Anniversary Class Center page Luncheon Attendees Class News In Memoriam, Names of Deceased Graduates Additional Information, Pins, Transcript & Address Info Constitution and By-Laws Scholarship Fund Application Certification Reimbursement Application Relief Fund Application List of Hotels Campus Ma

Nurses Alumni Association Bulletin, Fall 2009

2009 - 2010 Meeting Date Calendar 2010 Annual Luncheon & Meeting Notice Officers, Committee Chairs, Satellite and Volunteers Bulletin Publication Committee The President\u27s Message Treasurer\u27s Report Resume of Minutes Office News Committee Reports Annual Giving Contributors Letter to Alumni Janet C. Hindson Award Janet C. Hindson Award Qualifications 2009 Janet C. Hindson\u27s Nominees 2009 Janet C. Hindson\u27s Recipient\u27s Acceptance Speech TJUH\u27s MAGNET Award Our MAGNET Journey News About and From Our Graduates JSN Nursing Alumni Celebration; 117 years of Nursing Education Memories Ballad O\u27Brien Happy Birthday- To Be 80 or More Luncheon Pictures 50th Anniversary Class List for 1959 2009 Luncheon Reservations 50th Anniversary Class List for 1960 Love Ya Lorraine In Memoriam, Names of Deceased Graduates Class News - 2009 Additional Information - Pins, Transcript and Address Information Application For Nurses\u27 Scholarship Fund Certification Reimbursement Application Application For Relief Trust Fund Benefits List of Hotels Campus Map Change of Address Form - Donations - Information Change

Pressure-control purge panel for automatic butt welding

Modification of a purge panel for use in an automatic butt weld reduces the drop in pressure between the regulators and the weld head and tube purge fitting. The invention affects air regulators for plants, regulating circuits for pneumatic valves, and automatic welding machines

Propagating plane harmonic waves through finite length plates of variable thickness using finite element techniques

An analysis is given using finite element techniques which addresses the propagaton of a uniform incident pressure wave through a finite diameter axisymmetric tapered plate immersed in a fluid. The approach utilized in developing a finite element solution to this problem is based upon a technique for axisymmetric fluid structure interaction problems. The problem addressed is that of a 10 inch diameter axisymmetric fixed plate totally immersed in a fluid. The plate increases in thickness from approximately 0.01 inches thick at the center to 0.421 inches thick at a radius of 5 inches. Against each face of the tapered plate a cylindrical fluid volume was represented extending five wavelengths off the plate in the axial direction. The outer boundary of the fluid and plate regions were represented as a rigid encasement cylinder as was nearly the case in the physical problem. The primary objective of the analysis is to determine the form of the transmitted pressure distribution on the downstream side of the plate

The Superconducting Toroid for the New International AXion Observatory (IAXO)

IAXO, the new International AXion Observatory, will feature the most ambitious detector for solar axions to date. Axions are hypothetical particles which were postulated to solve one of the puzzles arising in the standard model of particle physics, namely the strong CP (Charge conjugation and Parity) problem. This detector aims at achieving a sensitivity to the coupling between axions and photons of one order of magnitude beyond the limits of the current detector, the CERN Axion Solar Telescope (CAST). The IAXO detector relies on a high-magnetic field distributed over a very large volume to convert solar axions to detectable X-ray photons. Inspired by the ATLAS barrel and end-cap toroids, a large superconducting toroid is being designed. The toroid comprises eight, one meter wide and twenty one meters long racetrack coils. The assembled toroid is sized 5.2 m in diameter and 25 m in length and its mass is about 250 tons. The useful field in the bores is 2.5 T while the peak magnetic field in the windings is 5.4 T. At the operational current of 12 kA the stored energy is 500 MJ. The racetrack type of coils are wound with a reinforced Aluminum stabilized NbTi/Cu cable and are conduction cooled. The coils optimization is shortly described as well as new concepts for cryostat, cold mass, supporting structure and the sun tracking system. Materials selection and sizing, conductor, thermal loads, the cryogenics system and the electrical system are described. Lastly, quench simulations are reported to demonstrate the system's safe quench protection scheme.Comment: To appear in IEEE Trans. Appl. Supercond. MT 23 issue. arXiv admin note: substantial text overlap with arXiv:1308.2526, arXiv:1212.463