Results 191 to 200 of about 704 (233)
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International Journal of Sports Medicine, 1989
Fluid-regulating hormones [arginine vasopressin (AVP) and aldosterone] as well as electrolytes, plasma volume (PV), and plasma proteins were studied in 16 well-trained male amateur runners (mean age 31.8 years) before t0), immediately after (t1), and 60 min (t2) and 22 h (t3) after a marathon run.
L, Röcker +3 more
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Fluid-regulating hormones [arginine vasopressin (AVP) and aldosterone] as well as electrolytes, plasma volume (PV), and plasma proteins were studied in 16 well-trained male amateur runners (mean age 31.8 years) before t0), immediately after (t1), and 60 min (t2) and 22 h (t3) after a marathon run.
L, Röcker +3 more
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Applicability of the ideal fluid model in high-temperature plasma physics
Soviet Physics Journal, 1989The dependence of the momentum flux density on the particle flux and pressure tensor is calculated for a relativistic collisionless plasma. It is shown that the relativistic plasma is not representable by the ideal fluid model in the presence of longitudinal and transverse perturbations.
Sh. G. Amiranashvili +2 more
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The Biot–Savart operator for application to knot theory, fluid dynamics, and plasma physics
Journal of Mathematical Physics, 2001The writhing number of a curve in 3-space is the standard measure of the extent to which the curve wraps and coils around itself; it has proved its importance for molecular biologists in the study of knotted DNA and of the enzymes which affect it. The helicity of a vector field defined on a domain in 3-space is the standard measure of the extent to ...
Cantarella, Jason +2 more
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Journal of Physics A: Mathematical and Theoretical, 2009
In this paper, we present a lattice Boltzmann method (LBM) to simulate weakly ionized plasmas using physical properties for a wide range of electron number densities. To preserve the convection–diffusion characteristics, this method is based on two scaling rules: (1) the physical viscosity is equal to the lattice viscosity, and (2) the characteristic ...
Li, Huayu, Ki, Hyungson
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In this paper, we present a lattice Boltzmann method (LBM) to simulate weakly ionized plasmas using physical properties for a wide range of electron number densities. To preserve the convection–diffusion characteristics, this method is based on two scaling rules: (1) the physical viscosity is equal to the lattice viscosity, and (2) the characteristic ...
Li, Huayu, Ki, Hyungson
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Inhomogenous diffusion equations in plasma physics and fluid dynamics
Canadian Journal of Physics, 1978Using the method of self-similar solution of partial differential equations, analytical solutions for the two- and three-dimensional inhomogeneous diffusion equations with the diffusion coefficients D ~ rm are obtained. The solutions found can be useful in studying the diffusion characteristics of some fluids and plasmas.
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Comparative Framework of Fluid and Kinetic Models in Plasma Physics
Abstract: Plasma, constituting nearly 99% of the visible universe, is investigated through two principal theoretical frameworks, namely the kinetic and the fluid models. The kinetic description provides a microscopic phase-space representation of plasma dynamics through distribution functions, while the fluid approach offers a macroscopic continuum ...Subham Dutta, Dhrubajit Kalita
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POSITONIC SOLUTIONS OF A VARIABLE-COEFFICIENT KdV EQUATION IN FLUID DYNAMICS AND PLASMA PHYSICS
International Journal of Modern Physics C, 2001Positons are a new concept in nonlinear sciences. In this paper, we report some positonic, exact analytic solutions for a variable-coefficient Korteweg-de Vries (KdV) equation arising from fluid dynamics and plasma physics.
YI-TIAN GAO, BO TIAN
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Physical applications of non-linear systems; Waves in fluids and plasmas
Physica D: Nonlinear Phenomena, 1987Abstract The above workshop took place at the Centre de Recherches Mathematiques of the Universite de Montreal from May 5 to 9, 1986. It was supported by NSERC of Canada, NSF and AFOSR of the United States and by the CRM in Montreal. The organizing committee consisted of M. Ablowitz and A. Fokas from Clarkson University, D.
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Non‐relativistic limit of two‐fluid Euler‐Maxwell equations arising from plasma physics
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2009AbstractIn this paper, the convergence of two‐fluid time‐dependent Euler‐Maxwell equations to two‐fluid compressible Euler‐Poisson equations in a torus via the non‐relativistic limit is studied. The local existence of smooth solutions to both systems is proved by using energy estimates for first order symmetrizable hyperbolic systems. For well prepared
Yang, Jianwei, Wang, Shu
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Fully implicit solution methods for fluid plasma equations with physics-based pre-conditioning
2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014Many problems of interest in plasma modelling are subject to the ‘tyranny of scales’, specifically, problems that encompass physical processes that operate on timescales that are separated by many orders of magnitude. Investigating such problems therefore requires the use of implicit time-integration schemes, which advance problem solutions on the ...
Kris Beckwith +4 more
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