35 lines
985 B
Python
35 lines
985 B
Python
import numpy as np
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import cosmotool as ct
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import borgicgen as bic
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cosmo={'omega_M_0':0.3175, 'h':0.6711}
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cosmo['omega_lambda_0']=1-cosmo['omega_M_0']
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cosmo['omega_k_0'] = 0
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cosmo['omega_B_0']=0.049
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cosmo['SIGMA8']=0.8344
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snap_id=11
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s = ct.loadRamsesAll("/nethome/lavaux/remote2/borgsim/", snap_id, doublePrecision=True)
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astart=s.getTime()
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pos,_,density,N,L,_ = bic.run_generation("initial_condition_borg.dat", 0.001, astart, cosmo, supersample=1, do_lpt2=True)
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dcic = ct.cicParticles(pos, L, N)
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dcic /= np.average(np.average(np.average(dcic, axis=0), axis=0), axis=0)
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dcic -= 1
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dsim = ct.cicParticles(s.getPositions(), L, N)
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dsim /= np.average(np.average(np.average(dsim, axis=0), axis=0), axis=0)
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dsim -= 1
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dcic_hat = np.fft.rfftn(dcic)*(L/N)**3
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dsim_hat = np.fft.rfftn(dsim)*(L/N)**3
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Pcic, bcic = bic.bin_power(np.abs(dcic_hat)**2/L**3, L, bins=50)
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Psim, bsim = bic.bin_power(np.abs(dsim_hat)**2/L**3, L, bins=50)
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borg_evolved = ct.read_borg_vol("final_density_1380.dat")
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