# Relevant Section of Enzo Paramter File (NOT COMPLETE!) 
ProblemType                              = 30      // cosmology simulation
TopGridRank                              = 3
TopGridDimensions                        = 32 32 32
SelfGravity                              = 1       // gravity on
TopGridGravityBoundary                   = 0       // Periodic BC for gravity
LeftFaceBoundaryCondition                = 3 3 3   // same for fluid
RightFaceBoundaryCondition               = 3 3 3
RefineBy                                 = 2

#
CosmologySimulationOmegaBaryonNow        = 0
CosmologySimulationOmegaCDMNow           = 0.285
CosmologySimulationDensityName           = GridDensity
CosmologySimulationVelocity1Name         = GridVelocities_x
CosmologySimulationVelocity2Name         = GridVelocities_y
CosmologySimulationVelocity3Name         = GridVelocities_z
CosmologySimulationCalculatePositions    = 1
CosmologySimulationParticleVelocity1Name = ParticleVelocities_x
CosmologySimulationParticleVelocity2Name = ParticleVelocities_y
CosmologySimulationParticleVelocity3Name = ParticleVelocities_z
CosmologySimulationParticleDisplacement1Name = ParticleDisplacements_x
CosmologySimulationParticleDisplacement2Name = ParticleDisplacements_y
CosmologySimulationParticleDisplacement3Name = ParticleDisplacements_z

#
#  define cosmology parameters
#
ComovingCoordinates                      = 1       // Expansion ON
CosmologyOmegaMatterNow                  = 0.285
CosmologyOmegaLambdaNow                  = 0.715
CosmologyHubbleConstantNow               = 0.695     // in 100 km/s/Mpc
CosmologyComovingBoxSize                 = 25    // in Mpc/h
CosmologyMaxExpansionRate                = 0.015   // maximum allowed delta(a)/a
CosmologyInitialRedshift                 = 99      //
CosmologyFinalRedshift                   = 0       //
GravitationalConstant                    = 1       // this must be true for cosmology
#
#
ParallelRootGridIO                       = 1
ParallelParticleIO                       = 1
PartitionNestedGrids                     = 1
CosmologySimulationNumberOfInitialGrids  = 4
CosmologySimulationGridDimension[1]      =               28               28               28
CosmologySimulationGridLeftEdge[1]       =          0.28125          0.34375          0.28125
CosmologySimulationGridRightEdge[1]      =          0.71875          0.78125          0.71875
CosmologySimulationGridLevel[1]          = 1
CosmologySimulationGridDimension[2]      =               36               36               36
CosmologySimulationGridLeftEdge[2]       =          0.34375          0.40625          0.34375
CosmologySimulationGridRightEdge[2]      =            0.625           0.6875            0.625
CosmologySimulationGridLevel[2]          = 2
CosmologySimulationGridDimension[3]      =               48               48               48
CosmologySimulationGridLeftEdge[3]       =            0.375           0.4375            0.375
CosmologySimulationGridRightEdge[3]      =           0.5625            0.625           0.5625
CosmologySimulationGridLevel[3]          = 3
#
# region allowed for further refinement
#
RefineRegionLeftEdge                     =          0.39375          0.45625          0.39375
RefineRegionRightEdge                     =          0.54375          0.60625          0.54375
