august enzo parameter_file.txt

# Relevant Section of Enzo Paramter File (NOT COMPLETE!)
ProblemType                              = 30      // cosmology simulation
TopGridRank                              = 3
TopGridDimensions                        = 128 128 128
SelfGravity                              = 1       // gravity on
TopGridGravityBoundary                   = 0       // Periodic BC for gravity
LeftFaceBoundaryCondition                = 3 3 3   // same for fluid
RightFaceBoundaryCondition               = 3 3 3
RefineBy                                 = 2

#
CosmologySimulationOmegaBaryonNow        = 0.0486
CosmologySimulationOmegaCDMNow           = 0.2603
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                  = 0.3089
CosmologyOmegaLambdaNow                  = 0.6911
CosmologyHubbleConstantNow               = 0.6774     // in 100 km/s/Mpc
CosmologyComovingBoxSize                 = 3.75    // in Mpc/h
CosmologyMaxExpansionRate                = 0.015   // maximum allowed delta(a)/a
CosmologyInitialRedshift                 = 200      //
CosmologyFinalRedshift                   = 0       //
GravitationalConstant                    = 1       // this must be true for cosmology
#
#
ParallelRootGridIO                       = 1
ParallelParticleIO                       = 1
PartitionNestedGrids                     = 1
CosmologySimulationNumberOfInitialGrids  = 1


dtDataDump             = 1
DataDumpName           = output_

CosmologyOutputRedshift[0] =  15
CosmologyOutputRedshift[1] =  5.676
CosmologyOutputRedshift[2] =  3.198
CosmologyOutputRedshift[3] =  2.191
CosmologyOutputRedshift[4] =  1.620
CosmologyOutputRedshift[5] =  1.241
CosmologyOutputRedshift[6] =  0.967
CosmologyOutputRedshift[7] =  0.756
CosmologyOutputRedshift[8] =  0.587
CosmologyOutputRedshift[9] =  0.448
CosmologyOutputRedshift[10] =  0.329
CosmologyOutputRedshift[11] =  0.227
CosmologyOutputRedshift[12] =  0.137
CosmologyOutputRedshift[13] =  0.058
CosmologyOutputRedshift[14] =  0.0

#
#  set hydro parameters
#
#
Gamma                  = 1.6667
PPMDiffusionParameter  = 0     // diffusion off
DualEnergyFormalism    = 1     // use total & internal energy
InterpolationMethod    = 1     // SecondOrderA
CourantSafetyNumber    = 0.4
ParticleCourantSafetyNumber = 0.4
RadiativeCooling            = 1
MultiSpecies                = 2

#
#  set grid refinement parameters
#
StaticHierarchy           = 0    // AMR turned on!

# ** These two set the level of refinement **
MaximumRefinementLevel        = 2
MaximumGravityRefinementLevel = 2

RefineBy                        = 2
CellFlaggingMethod              = 2 4
MinimumOverDensityForRefinement = 3.0 3.0

MinimumEfficiency                = 0.35
NumberOfBufferZones              = 3
RefineByJeansLengthSafetyFactor  = 16

#
#  set some global parameters
#
GreensFunctionMaxNumber   = 100   // # of greens function at any one time
UseMinimumPressureSupport = 1

# Turning these off to get exact halo locations from this run...
StarParticleCreation = 512
StarParticleFeedback = 512
RadiativeTransferAdaptiveTimestep      = 1
RadiativeTransfer                      = 1
RadiativeTransferHIIRestrictedTimestep = 1
MBHAccretion = 1