233 lines
11 KiB
Python
Executable File
233 lines
11 KiB
Python
Executable File
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#################################################
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##
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## This file provides the input parameters required for numerical relativity.
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## XIAOQU
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## 2024/03/19 --- 2025/09/14
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##
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#################################################
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import numpy
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#################################################
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## Setting MPI processes and the output file directory
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File_directory = "GW150914" ## output file directory
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Output_directory = "binary_output" ## binary data file directory
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## The file directory name should not be too long
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MPI_processes = 48 ## number of mpi processes used in the simulation
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GPU_Calculation = "no" ## Use GPU or not
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## (prefer "no" in the current version, because the GPU part may have bugs when integrated in this Python interface)
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CPU_Part = 1.0
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GPU_Part = 0.0
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#################################################
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#################################################
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## Setting the physical system and numerical method
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Symmetry = "equatorial-symmetry" ## Symmetry of System: choose equatorial-symmetry、no-symmetry、octant-symmetry
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Equation_Class = "BSSN" ## Evolution Equation: choose "BSSN", "BSSN-EScalar", "BSSN-EM", "Z4C"
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## If "BSSN-EScalar" is chosen, it is necessary to set other parameters below
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Initial_Data_Method = "Ansorg-TwoPuncture" ## initial data method: choose "Ansorg-TwoPuncture", "Lousto-Analytical", "Cao-Analytical", "KerrSchild-Analytical"
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Time_Evolution_Method = "runge-kutta-45" ## time evolution method: choose "runge-kutta-45"
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Finite_Diffenence_Method = "4th-order" ## finite-difference method: choose "2nd-order", "4th-order", "6th-order", "8th-order"
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#################################################
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#################################################
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## Setting the time evolutionary information
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Start_Evolution_Time = 0.0 ## start evolution time t0
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Final_Evolution_Time = 1000.0 ## final evolution time t1
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Check_Time = 100.0
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Dump_Time = 100.0 ## time inteval dT for dumping binary data
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D2_Dump_Time = 100.0 ## dump the ascii data for 2d surface after dT'
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Analysis_Time = 0.1 ## dump the puncture position and GW psi4 after dT"
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Evolution_Step_Number = 10000000 ## stop the calculation after the maximal step number
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Courant_Factor = 0.5 ## Courant Factor
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Dissipation = 0.15 ## Kreiss-Oliger Dissipation Strength
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#################################################
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#################################################
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## Setting the grid structure
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basic_grid_set = "Patch" ## grid structure: choose "Patch" or "Shell-Patch"
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grid_center_set = "Cell" ## grid center: chose "Cell" or "Vertex"
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grid_level = 9 ## total number of AMR grid levels
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static_grid_level = 5 ## number of AMR static grid levels
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moving_grid_level = grid_level - static_grid_level ## number of AMR moving grid levels
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analysis_level = 0
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refinement_level = 3 ## time refinement start from this grid level
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largest_box_xyz_max = [320.0, 320.0, 320.0] ## scale of the largest box
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## not ne cess ary to be cubic for "Patch" grid s tructure
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## need to be a cubic box for "Shell-Patch" grid structure
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largest_box_xyz_min = - numpy.array(largest_box_xyz_max)
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static_grid_number = 96 ## grid points of each static AMR grid (in x direction)
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## (grid points in y and z directions are automatically adjusted)
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moving_grid_number = 48 ## grid points of each moving AMR grid
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shell_grid_number = [32, 32, 100] ## grid points of Shell-Patch grid
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## in (phi, theta, r) direction
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devide_factor = 2.0 ## resolution between different grid levels dh0/dh1, only support 2.0 now
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static_grid_type = 'Linear' ## AMR static grid structure , only supports "Linear"
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moving_grid_type = 'Linear' ## AMR moving grid structure , only supports "Linear"
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quarter_sphere_number = 96 ## grid number of 1/4 s pher ical surface
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## (which is needed for evaluating the spherical surface integral)
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#################################################
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#################################################
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## Setting the puncture information
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puncture_number = 2
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position_BH = numpy.zeros( (puncture_number, 3) )
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parameter_BH = numpy.zeros( (puncture_number, 3) )
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dimensionless_spin_BH = numpy.zeros( (puncture_number, 3) )
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momentum_BH = numpy.zeros( (puncture_number, 3) )
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puncture_data_set = "Manually" ## Method to give Puncture’s positions and momentum
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## choose "Manually" or "Automatically-BBH"
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## Prefer to choose "Manually", because "Automatically-BBH" is developing now
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## initial orbital distance and ellipticity for BBHs system
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## ( needed for "Automatically-BBH" case , not affect the "Manually" case )
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Distance = 10.0
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e0 = 0.0
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## black hole parameter (M Q* a*)
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parameter_BH[0] = [ 36.0/(36.0+29.0), 0.0, +0.31 ]
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parameter_BH[1] = [ 29.0/(36.0+29.0), 0.0, -0.46 ]
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## dimensionless spin in each direction
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dimensionless_spin_BH[0] = [ 0.0, 0.0, +0.31 ]
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dimensionless_spin_BH[1] = [ 0.0, 0.0, -0.46 ]
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## use Brugmann's convention
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## -----0-----> y
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## - +
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#---------------------------------------------
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## If puncture_data_set is chosen to be "Manually", it is necessary to set the position and momentum of each puncture manually
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## initial position for each puncture
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position_BH[0] = [ 0.0, 10.0*29.0/(36.0+29.0), 0.0 ]
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position_BH[1] = [ 0.0, -10.0*36.0/(36.0+29.0), 0.0 ]
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## initial mumentum for each puncture
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## (needed for "Manually" case, does not affect the "Automatically-BBH" case)
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momentum_BH[0] = [ -0.09530152296974252, -0.00084541526517121, 0.0 ]
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momentum_BH[1] = [ +0.09530152296974252, +0.00084541526517121, 0.0 ]
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#################################################
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#################################################
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## Setting the gravitational wave information
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GW_L_max = 4 ## maximal L number in gravitational wave
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GW_M_max = 4 ## maximal M number in gravitational wave
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Detector_Number = 12 ## number of dector
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Detector_Rmin = 50.0 ## nearest dector distance
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Detector_Rmax = 160.0 ## farest dector distance
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#################################################
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#################################################
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## Setting the apprent horizon
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AHF_Find = "no" ## whether to find the apparent horizon: choose "yes" or "no"
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AHF_Find_Every = 24
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AHF_Dump_Time = 20.0
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#################################################
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#################################################
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## Other parameters (testing)
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## Only influence the Equation_Class = "BSSN-EScalar" case
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FR_a2 = 3.0 ## f(R) = R + a2 * R^2
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FR_l2 = 10000.0
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FR_phi0 = 0.00005
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FR_r0 = 120.0
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FR_sigma0 = 8.0
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FR_Choice = 2 ## Choice options: 1 2 3 4 5
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## 1: phi(r) = phi0 * Exp(-(r-r0)**2/sigma0)
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## V(r) = 0
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## 2: phi(r) = phi0 * a2^2/(1+a2^2)
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## V(r) = Exp(-8*Sqrt(PI/3)*phi(r)) * (1-Exp(4*Sqrt(PI/3)*phi(r)))**2 / (32*PI*a2)
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## 3: Schrodinger-Newton gived by system phi(r)
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## V(r) = Exp(-8*Sqrt(PI/3)*phi(r)) * (1-Exp(4*Sqrt(PI/3)*phi(r)))**2 / (32*PI*a2)
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## 4: phi(r) = phi0 * 0.5 * ( tanh((r+r0)/sigma0) - tanh((r-r0)/sigma0) )
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## V(r) = 0
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## f(R) = R + a2*R^2 with a2 = +oo
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## 5: phi(r) = phi0 * Exp(-(r-r0)**2/sigma)
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## V(r) = 0
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#################################################
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#################################################
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## Other parameters (testing)
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## (please do not change if not necessary)
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boundary_choice = "BAM-choice" ## Sommerfeld boundary condition : choose "BAM-choice" or "Shibata-choice"
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## prefer "BAM-choice"
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gauge_choice = 0 ## gauge choice
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## 0: B^i gauge
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## 1: David's puncture gauge
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## 2: MB B^i gauge
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## 3: RIT B^i gauge
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## 4: MB beta gauge
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## 5: RIT beta gauge
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## 6: MGB1 B^i gauge
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## 7: MGB2 B^i gauge
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## prefer 0 or 1
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tetrad_type = 2 ## tetradtype
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## v:r; u: phi; w: theta
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## v^a = (x,y,z)
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## 0: orthonormal order: v,u,w
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## v^a = (x,y,z)
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## m = (phi - i theta)/sqrt(2)
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## following Frans, Eq.(8) of PRD 75, 124018(2007)
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## 1: orthonormal order: w,u,v
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## m = (theta + i phi)/sqrt(2)
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## following Sperhake, Eq.(3.2) of PRD 85, 124062(2012)
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## 2: orthonormal order: v,u,w
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## v_a = (x,y,z)
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## m = (phi - i theta)/sqrt(2)
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## following Frans, Eq.(8) of PRD 75, 124018(2007)
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## this version recommend set to 2
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## prefer 2
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#################################################
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