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Commit 78650c51 authored by Bert Vandenbroucke's avatar Bert Vandenbroucke
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Added 1D interacting blast wave test.

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# Define the system of units to use internally.
InternalUnitSystem:
UnitMass_in_cgs: 1 # Grams
UnitLength_in_cgs: 1 # Centimeters
UnitVelocity_in_cgs: 1 # Centimeters per second
UnitCurrent_in_cgs: 1 # Amperes
UnitTemp_in_cgs: 1 # Kelvin
# Parameters governing the time integration
TimeIntegration:
time_begin: 0. # The starting time of the simulation (in internal units).
time_end: 3.8e-2 # The end time of the simulation (in internal units).
dt_min: 1e-7 # The minimal time-step size of the simulation (in internal units).
dt_max: 1e-5 # The maximal time-step size of the simulation (in internal units).
# Parameters governing the snapshots
Snapshots:
basename: interactingBlastWaves # Common part of the name of output files
time_first: 0. # Time of the first output (in internal units)
delta_time: 1e-2 # Time difference between consecutive outputs (in internal units)
# Parameters governing the conserved quantities statistics
Statistics:
delta_time: 1e-5 # Time between statistics output
# Parameters for the hydrodynamics scheme
SPH:
resolution_eta: 1.2348 # Target smoothing length in units of the mean inter-particle separation (1.2348 == 48Ngbs with the cubic spline kernel).
CFL_condition: 0.1 # Courant-Friedrich-Levy condition for time integration.
# Parameters related to the initial conditions
InitialConditions:
file_name: ./interactingBlastWaves.hdf5 # The file to read
###############################################################################
# This file is part of SWIFT.
# Copyright (c) 2018 Bert Vandenbroucke (bert.vandenbroucke@gmail.com)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
# Generates a regular 1D grid that contains the Woodward & Colella (1984)
# interacting blast waves test.
# Note that the original test requires reflective boundary conditions. Since we
# do not have those in SWIFT, we double the computational domain and mirror the
# setup in the second half.
import numpy as np
import h5py
fileName = "interactingBlastWaves.hdf5"
numPart = 800
boxSize = 2.
coords = np.zeros((numPart, 3))
v = np.zeros((numPart, 3))
m = np.zeros(numPart) + boxSize / numPart
h = np.zeros(numPart) + 2. * boxSize / numPart
u = np.zeros(numPart)
ids = np.arange(numPart, dtype = 'L')
rho = np.ones(numPart)
for i in range(numPart):
coords[i,0] = (i + 0.5) * boxSize / numPart
if coords[i,0] < 0.1 or coords[i,0] > 1.9:
u[i] = 2500.
elif coords[i,0] > 0.9 and coords[i,0] < 1.1:
u[i] = 250.
else:
u[i] = 0.025
#File
file = h5py.File(fileName, 'w')
# Header
grp = file.create_group("/Header")
grp.attrs["BoxSize"] = boxSize
grp.attrs["NumPart_Total"] = [numPart, 0, 0, 0, 0, 0]
grp.attrs["NumPart_Total_HighWord"] = [0, 0, 0, 0, 0, 0]
grp.attrs["NumPart_ThisFile"] = [numPart, 0, 0, 0, 0, 0]
grp.attrs["Time"] = 0.0
grp.attrs["NumFilesPerSnapshot"] = 1
grp.attrs["MassTable"] = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
grp.attrs["Flag_Entropy_ICs"] = 0
grp.attrs["Dimension"] = 1
#Runtime parameters
grp = file.create_group("/RuntimePars")
grp.attrs["PeriodicBoundariesOn"] = 1
#Units
grp = file.create_group("/Units")
grp.attrs["Unit length in cgs (U_L)"] = 1.
grp.attrs["Unit mass in cgs (U_M)"] = 1.
grp.attrs["Unit time in cgs (U_t)"] = 1.
grp.attrs["Unit current in cgs (U_I)"] = 1.
grp.attrs["Unit temperature in cgs (U_T)"] = 1.
#Particle group
grp = file.create_group("/PartType0")
grp.create_dataset('Coordinates', data=coords, dtype='d')
grp.create_dataset('Velocities', data=v, dtype='f')
grp.create_dataset('Masses', data=m, dtype='f')
grp.create_dataset('SmoothingLength', data=h, dtype='f')
grp.create_dataset('InternalEnergy', data=u, dtype='f')
grp.create_dataset('ParticleIDs', data=ids, dtype='L')
grp.create_dataset('Density', data=rho, dtype='f')
file.close()
###############################################################################
# This file is part of SWIFT.
# Copyright (c) 2018 Bert Vandenbroucke (bert.vandenbroucke@gmail.com)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
import h5py
import matplotlib
matplotlib.use("Agg")
import pylab as pl
import sys
snap = int(sys.argv[1])
sim = h5py.File("interactingBlastWaves_%04d.hdf5" % snap, "r")
coords = sim["/PartType0/Coordinates"]
rho = sim["/PartType0/Density"]
pl.xlabel("$x$")
pl.ylabel("$\\rho{}$")
pl.xlim(0.4, 1.)
pl.ylim(0., 7.)
pl.plot(coords[:,0], rho, "k.")
pl.savefig("InteractingBlastWaves.png")
#!/bin/bash
# Generate the initial conditions if they are not present.
if [ ! -e interactingBlastWaves.hdf5 ]
then
echo "Generating initial conditions for the Sedov blast example..."
python makeIC.py
fi
# Run SWIFT
../swift -s -t 1 interactingBlastWaves.yml 2>&1 | tee output.log
# Plot the solution
python plotSolution.py 4
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