Results 261 to 270 of about 1,778,184 (292)
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The Journal of Chemical Physics, 1982
A method for generating Dyson equations for two-particle fluid correlation functions is applied to the case of ionic and polar fluids to systematically yield a sequence of approximations that go beyond the lowest-order gamma-ordered approximation. The first two such approximations are given here. For the simplest class of such fluid models—those having
J. S. Ho/ye, G. Stell
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A method for generating Dyson equations for two-particle fluid correlation functions is applied to the case of ionic and polar fluids to systematically yield a sequence of approximations that go beyond the lowest-order gamma-ordered approximation. The first two such approximations are given here. For the simplest class of such fluid models—those having
J. S. Ho/ye, G. Stell
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Dispersive approximations in fluid dynamics
Communications on Pure and Applied Mathematics, 1991The authors analyze von Neumann's algorithm for solving the initial value problem for Lagrangian equations of compressible flow. Von Neumann's difference scheme consists of replacing the time and space derivatives by central difference quotients. The scheme is linearly stable in \(\ell^ 2\) sense when GFL condition is satisfied.
Hou, Thomas Y., Lax, Peter D.
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Energy-Equation Approximations in Fluid Mechanics
Journal of the Aerospace Sciences, 1962Fig. 1 is a dimensionless plot of the digital-computer solution of Eq. (1). Each constant-^ curve peaks at a depth Froude Number, c/vgH < 1. A s ^ decreases the peaks become sharper and larger in magnitude, approaching the two-dimensional solution which gives infinite drag at c/vgH = l.
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Numerical approximation of viscoelastic fluids
ESAIM: Mathematical Modelling and Numerical Analysis, 2017Stable finite element schemes are developed for the solution of the equations modeling the flow of viscoelastic fluids. In contrast with classical statements of these equations, which introduce the stress as a primary variable, these schemes explicitly involve the deformation tensor and elastic energy. Energy estimates and existence of solutions to the
Louis Perrotti +2 more
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Improved fluid superposition approximation
Molecular Physics, 1967An improved superposition approximation is derived for the triplet correlation function of a classical simple fluid in equilibrium. The method of derivation involves the techniques of functional differentation. The associated functional Taylor expansion is taken as far as the triplet term.
G.H.A. Cole, A. Moreton
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The Electrostatic and Fluid Approximations
1998Abstract In contrast to what occurs in vacuum or in ordinary dielectrics, the electric field of a plane wave propagating in a plasma generally has a nonvanishing longitudinal component, Eς = k · E/k ‘F- 0.
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A one molecular fluid approximation for diatomic fluid mixtures
The Journal of Chemical Physics, 1984We investigate a one component molecular fluid approximation for conformally similar molecules. We test this scheme on (two) mixtures of rigid homonuclear diatomic Lennard-Jones (LJ) fluids for which a limited amount of information from molecular dynamics simulations is available.
Eduardo M. Waisman +2 more
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Classical ionic fluids in the mean spherical approximation
Inorganica Chimica Acta, 1980The recently obtained analytical solution of the mean spherical approximation has been used to calculate thermodynamic and structural properties of aqueous solutions of asymmetric electrolytes. The same approximation has also been used to calculate structure functions of pure and mixed molten salts.
Roberto Triolo, Antonio M. Floriano
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Fluid approximations and control of queues in emergency departments
European Journal of Operational Research, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jerome Niyirora, Jun Zhuang 0001
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Approximations in the Theory of Dense Fluids
The Physics of Fluids, 1960A fluid of rigid spheres in equilibrium is considered from a viewpoint which allows the deduced equation of state to reflect very sensitively the accuracy of two approximations to the triplet distribution function. Specifically, these approximations are: (1) the usual Kirkwood superposition scheme, and (2) assumption that the correlation of excess ...
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