From ee648d2eaaba5d88df19fe9223105c178f6950ad Mon Sep 17 00:00:00 2001
From: miller <miller@54f01db8-623e-4a4a-80be-c8eacd6477fb>
Date: Wed, 22 Dec 1999 19:27:01 +0000
Subject: An thorn implementing the ideal fluid equation of state:

   P = (gamma-1)*rho*eps


Mark


git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinEOS/EOS_IdealFluid/trunk@2 54f01db8-623e-4a4a-80be-c8eacd6477fb
---
 src/EOS_Ideal_Fluid.F | 154 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 src/EOS_Ideal_Fluid.F

(limited to 'src/EOS_Ideal_Fluid.F')

diff --git a/src/EOS_Ideal_Fluid.F b/src/EOS_Ideal_Fluid.F
new file mode 100644
index 0000000..9907d4b
--- /dev/null
+++ b/src/EOS_Ideal_Fluid.F
@@ -0,0 +1,154 @@
+c/*@@
+c  @file      EOS_Ideal_Fluid.F
+c  @date      December 1999
+c  @author    Mark Miller
+c  @desc 
+c     Routines to calculate Ideal Fluid EOS through EOS_Base
+c  @enddesc 
+c@@*/
+
+#include "cctk.h"
+#include "cctk_parameters.h"
+
+c/*@@
+c  @routine    EOS_Ideal_Fluid_Pressure
+c  @date       December 1999
+c  @author     Mark Miller
+c  @desc 
+c    Calculate the pressure  P=(gamma-1)*eps*rho
+c  @enddesc 
+c  @calls     
+c  @calledby   
+c  @history 
+c
+c  @endhistory 
+c
+c@@*/
+      CCTK_REAL FUNCTION EOS_Ideal_Fluid_Pressure(rest_mass_density, 
+     .                                            specific_internal_energy)
+
+      IMPLICIT NONE
+      DECLARE_CCTK_PARAMETERS
+
+      CCTK_REAL rest_mass_density
+      CCTK_REAL specific_internal_energy
+
+      EOS_Ideal_Fluid_Pressure = (eos_ideal_fluid_gamma - 1.0d0) *
+     .   rest_mass_density * specific_internal_energy
+
+      END FUNCTION EOS_Ideal_Fluid_Pressure
+
+c/*@@
+c  @routine    EOS_Ideal_Fluid_SpecificIE
+c  @date       December 1999
+c  @author     Mark Miller
+c  @desc 
+c    Calculate the specific internal energy  
+c       eps = press / ( (gamma-1)*rho)
+c  @enddesc 
+c  @calls     
+c  @calledby   
+c  @history 
+c
+c  @endhistory 
+c
+c@@*/
+      CCTK_REAL FUNCTION EOS_Ideal_Fluid_SpecificIE(rest_mass_density,pressure)
+
+      IMPLICIT NONE
+      DECLARE_CCTK_PARAMETERS
+
+      CCTK_REAL rest_mass_density
+      CCTK_REAL pressure
+
+      EOS_Ideal_Fluid_SpecificIE = pressure / ((eos_ideal_fluid_gamma - 1.0d0)*
+     .   rest_mass_density)
+
+      END FUNCTION EOS_Ideal_Fluid_SpecificIE
+
+c/*@@
+c  @routine    EOS_Ideal_Fluid_RestMassDens
+c  @date       December 1999
+c  @author     Mark Miller
+c  @desc 
+c    Calculate the rest mass density
+c       rho = pressure / ((gamma-1)*eps)
+c  @enddesc 
+c  @calls     
+c  @calledby   
+c  @history 
+c
+c  @endhistory 
+c
+c@@*/
+      CCTK_REAL FUNCTION EOS_Ideal_Fluid_RestMassDens(specific_internal_energy,
+     .    pressure)
+
+      IMPLICIT NONE
+      DECLARE_CCTK_PARAMETERS
+
+      CCTK_REAL specific_internal_energy
+      CCTK_REAL pressure
+
+      EOS_Ideal_Fluid_RestMassDens = pressure / 
+     .   ((eos_ideal_fluid_gamma - 1.0d0)*specific_internal_energy)
+
+      END FUNCTION EOS_Ideal_Fluid_RestMassDens
+
+c/*@@
+c  @routine    EOS_Ideal_Fluid_DPressByDRho
+c  @date       December 1999
+c  @author     Mark Miller
+c  @desc 
+c    Calculate d(pressure)/d(rho), keeping eps fixed:
+c       dp/drho = (gamma-1)*eps
+c  @enddesc 
+c  @calls     
+c  @calledby   
+c  @history 
+c
+c  @endhistory 
+c
+c@@*/
+      CCTK_REAL FUNCTION EOS_Ideal_Fluid_DPressByDRho(rest_mass_density, 
+     .      specific_internal_energy)
+
+      IMPLICIT NONE
+      DECLARE_CCTK_PARAMETERS
+
+      CCTK_REAL rest_mass_density
+      CCTK_REAL specific_internal_energy
+
+      EOS_Ideal_Fluid_DPressByDRho = (eos_ideal_fluid_gamma - 1.0d0) *
+     .   specific_internal_energy
+
+      END FUNCTION EOS_Ideal_Fluid_DPressByDRho
+
+c/*@@
+c  @routine    EOS_Ideal_Fluid_DPressByDEps
+c  @date       December 1999
+c  @author     Mark Miller
+c  @desc 
+c    Calculate d(pressure)/d(eps), keeping rho fixed
+c      dp/deps = (gamma-1)*rho
+c  @enddesc 
+c  @calls     
+c  @calledby   
+c  @history 
+c
+c  @endhistory 
+c
+c@@*/
+      CCTK_REAL FUNCTION EOS_Ideal_Fluid_DPressByDEps(rest_mass_density, 
+     .   specific_internal_energy)
+
+      IMPLICIT NONE
+      DECLARE_CCTK_PARAMETERS
+
+      CCTK_REAL rest_mass_density
+      CCTK_REAL specific_internal_energy
+
+      EOS_Ideal_Fluid_DPressByDEps = (eos_ideal_fluid_gamma - 1.0d0) *
+     .   rest_mass_density
+
+      END FUNCTION EOS_Ideal_Fluid_DPressByDEps
-- 
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