INTRINSIC AMBIGUITY IN SECOND-ORDER VISCOSITY PARAMETERS IN RELATIVISTIC HYDRODYNAMICS
نویسندگان
چکیده
منابع مشابه
On Discretization of Second-order Derivatives in Smoothed Particle Hydrodynamics
Discretization of spatial derivatives is an important issue in meshfree methods especially when the derivative terms contain non-linear coefficients. In this paper, various methods used for discretization of second-order spatial derivatives are investigated in the context of Smoothed Particle Hydrodynamics. Three popular forms (i.e. ”double summation”, ”second-order kernel derivation”, and ”dif...
متن کاملEntropy Production in Relativistic Hydrodynamics
The entropy production occurring in relativistic hydrodynamical systems such as the quark-gluon plasma (QGP) formed in high-energy nuclear collisions is explored. We study mechanisms which change the composition of the fluid, i.e. particle production and/or chemical reactions, along with chemoand thermo-diffusion. These effects complement the conventional dissipative effects of shear viscosity,...
متن کاملSmall viscosity method and criteria for shock wave existence in relativistic magnetic hydrodynamics
We obtain criteria for shock wave (SW) existence in relativistic magnetic hydrodynamics with with no suppositions about convex-ity of the equation of state. Method of derivation involves consideration of a continuous SW profile in presence of Landau-Lifshitz relativistic viscosity tensor with both non-zero viscosity coefficients η and ζ. We point out that supposition of viscous profile existenc...
متن کاملHigh-Order Residual Distribution Schemes for Steady 1D Relativistic Hydrodynamics
An important goal in astrophysics is to model phenomena such as the gravitational collapse of stars and accretion onto black holes. Under the assumption that the spacetime metric remains fixed on the time scales of fluid motion, the relevant physics can be modeled by the equations of relativistic hydrodynamics. These equations form a system of hyperbolic balance laws that are strongly nonlinear...
متن کاملGeneral relativistic hydrodynamics with viscosity: contraction, catastrophic collapse, and disk formation in hypermassive neutron stars
Viscosity and magnetic fields drive differentially rotating stars toward uniform rotation, and this process has important consequences in many astrophysical contexts. For example, merging binary neutron stars can form a “hypermassive” remnant, i.e. a differentially rotating star with a mass greater than would be possible for a uniformly rotating star. The removal of the centrifugal support prov...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 2012
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x12501254