[Commits] [svn:einsteintoolkit] GRHydro/trunk/ (Rev. 315)

bcmsma at astro.rit.edu bcmsma at astro.rit.edu
Tue Mar 13 12:06:09 CDT 2012


User: bmundim
Date: 2012/03/13 12:06 PM

Modified:
 /trunk/
  param.ccl
 /trunk/doc/
  documentation.tex

Log:
 epsilon: specific internal energy (ie energy/mass)

File Changes:

Directory: /trunk/doc/
======================

File [modified]: documentation.tex
Delta lines: +6 -6
===================================================================
--- trunk/doc/documentation.tex	2012-02-16 23:18:45 UTC (rev 314)
+++ trunk/doc/documentation.tex	2012-03-13 17:06:08 UTC (rev 315)
@@ -204,11 +204,11 @@
 
 For the equations of state, two ``types'' are recognized, controlled
 by the parameter {\tt GRHydro\_eos\_type}. These are {\tt "Polytype"}
-where the pressure is a function of the density, $P=P(\rho)$, and the
+where the pressure is a function of the rest-mass density, $P=P(\rho)$, and the
 more generic {\tt "General"} type where the pressure is a function
-of the density and the internal energy, $P=P(\rho, \epsilon)$. For the
+of the rest-mass density and the specific internal energy, $P=P(\rho, \epsilon)$. For the
 {\tt Polytype} equations of state one fewer equation is evolved and
-the specific internal energy is set directly from the density. The
+the specific internal energy is set directly from the rest-mass density. The
 actual equation of state used is controlled by the parameter {\tt
   GRHydro\_eos\_table}. Polytype equations of state include {\tt
   "2D\_Polytrope"} and general equations of state include {\tt
@@ -312,8 +312,8 @@
 $D$ is the generalized particle number density, $S^i$ are the generalized
 momenta in each direction, and $\tau$ is an internal energy term.
 These conserved variables are composed from a set of {\it primitive variables},
-which are $\rho$, the density, $p$, the
-pressure, $v^i$, the fluid 3-velocities, $\epsilon$, the internal
+which are $\rho$, the rest-mass density, $p$, the
+pressure, $v^i$, the fluid 3-velocities, $\epsilon$, the specific internal
 energy, and $W$, the Lorentz factor, via the following relations
 % from GRHydro/src/Prim2con.F90
 %  w = 1.d0 / sqrt(1.d0 - (gxx*dvelx*dvelx + gyy*dvely*dvely + gzz &
@@ -342,7 +342,7 @@
 Only five of the primitive variables are
 independent. Usually the Lorentz factor is defined in terms of the
 velocities and the metric as $W = (1-\gamma_{ij}v^i v^j)^{-1/2}$.  
-Also one of the pressure, density or internal energy terms is given in 
+Also one of the pressure, rest-mass density or specific internal energy terms is given in 
 terms of the other two by an {\it equation of state}.
 
 The fluxes are usually defined in terms of both the conserved

Directory: /trunk/
==================

File [modified]: param.ccl
Delta lines: +1 -1
===================================================================
--- trunk/param.ccl	2012-02-16 23:18:45 UTC (rev 314)
+++ trunk/param.ccl	2012-03-13 17:06:08 UTC (rev 315)
@@ -322,7 +322,7 @@
   0: :: "greater than zero"
 } 1.e-20
 
-real GRHydro_eps_min "Minimum value of internal energy - this is now only used in GRHydro_InitData's GRHydro_Only_Atmo routine"
+real GRHydro_eps_min "Minimum value of specific internal energy - this is now only used in GRHydro_InitData's GRHydro_Only_Atmo routine"
 {
  0: :: "Positive"
 } 1.e-10



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