# # Generates initial grid and particle fields for a single-grid # dark matter-only CDM simulation - that is to say, a cosmology # simulation where there is only dark matter, and the initial # conditions are not nested. # # Note: This file is used by inits.exe with the command line # 'inits.exe -d dmonly.inits' and outputs two files, called # ParticlePositions and ParticleVelocities. Enzo then reads # these files in using its own parameter file. # # Written by Brian O'Shea (oshea@msu.edu) # # # Cosmology Parameters # CosmologyOmegaBaryonNow = 0.0 CosmologyOmegaMatterNow = 0.27 CosmologyOmegaLambdaNow = 0.73 CosmologyComovingBoxSize = 20.0 // in Mpc/h CosmologyHubbleConstantNow = 0.7 // in units of 100 km/s/Mpc CosmologyInitialRedshift = 60.0 # # Power spectrum Parameters # PowerSpectrumType = 11 // Eisenstein & Hu (1999) PowerSpectrumSigma8 = 0.9 PowerSpectrumPrimordialIndex = 1.0 PowerSpectrumRandomSeed = -12234931 # # Grid info # InitializeGrids = 0 # # Particle info # ParticleDims = 128 128 128 InitializeParticles = 1 ParticleRefinement = 1 # # Overall field parameters # # # Names # ParticlePositionName = ParticlePositions ParticleVelocityName = ParticleVelocities