Results 101 to 110 of about 2,562,489 (225)

Absence of Bose condensation on lattices with moat bands

open access: yes, 2014
We study hard-core bosons on a class of frustrated lattices with the lowest Bloch band having a degenerate minimum along a closed contour, the moat, in the reciprocal space.
Glazman, Leonid I.   +2 more
core   +1 more source

Method of discrete singularities in problems of filler vibrations in fuel tanks under overloads and at low gravity

open access: yesВісник Харківського національного університету імені В.Н. Каразіна. Серія: Математичне моделювання, інформаційні технології, автоматизовані системи управління, 2019
The paper is about free vibration problems in fuel tanks with different levels of fillers both under overloads and low gravity. The fuel tanks are considered as rigid shells of revolution.
Myronenko Maria L.   +2 more
doaj   +1 more source

Renormalization of the one-loop theory of fluctuations in polymer blends and diblock copolymer melts

open access: yes, 2007
Attempts to use coarse-grained molecular theories to calculate corrections to the random-phase approximation (RPA) for correlations in polymer mixtures have been plagued by an unwanted sensitivity to the value of an arbitrary cutoff length, {\it i.e ...
D. J. Amit   +7 more
core   +1 more source

Alte und neue Wege in der Rheometrie der Polymer-Schmelzen

open access: yesCHIMIA, 1984
Polymer melts are nonlinear, pseudoplastic, viscoelastic, rubberlike liquids. Because of this complex rheological behaviour experimental investigations with conventional methods seem to be insufficient.
Joachim Meissner
doaj   +1 more source

Editorial: Special Issue on Computational Problems in Applied Mathematics

open access: yesWalailak Journal of Science and Technology, 2014
Computational Fluid Dynamics (CFD) is a highly interdisciplinary research area which lies at the interface of physics, applied mathematics, and computer science.
Walailak Journal of Science and Technology
doaj   +1 more source

A Vortex Method for Bi-phasic Fluids Interacting with Rigid Bodies [PDF]

open access: yes, 2006
We present an accurate Lagrangian method based on vortex particles, level-sets, and immersed boundary methods, for animating the interplay between two fluids and rigid solids.
Allard, Jérémie   +3 more
core   +3 more sources

Vapour and air bubble collapse analysis in viscous compressible water

open access: yesSemina: Ciências Exatas e Tecnológicas, 2001
Numerical simulations of the collapse of bubbles (or cavities) are shown, using the finite difference method, taking into account the compressibility of the liquid, expected to occur in the final stages of the collapse process.
Gil Bazanini
doaj  

Numerical Simulation of Bubble Coalescence using a Volume of Fluid (VOF) Model [PDF]

open access: yes, 1998
This paper presents a Volume Tracking model developed with the specific objective of studying the time – dependent behavior of multiple, “large” gas bubbles rising in an initially quiescent liquid.
Delnoij, E.   +2 more
core   +1 more source

Design of short Venturi flow meters for incompressible and isothermal flow applications

open access: yesHeliyon
The Venturi flow meter offers a range of measurement options for liquids, gas, steam, and slurries in piped systems. The main criteria for assessing Venturi performance include permanent pressure loss, discharge coefficient, relative pressure loss ...
Keith Wells, Ahmad Sharifian
doaj   +1 more source

High pressure viscosity measurement with falling body type viscometers [PDF]

open access: yes, 2010
With the increasing number of applications of high pressure chemical and process technologies across a range of engineering fields, there is a corresponding growing interest in the need to measure accurately and reliably important rheological parameters.
Schaschke, Carl
core   +1 more source

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