Commit 6e6033a4 authored by Matthieu Schaller's avatar Matthieu Schaller
Browse files

Added a Sedov blast test. The ICs are generated by a python script.


Former-commit-id: 57b88f50ef1e656bd78ee03b503d004decae3e9d
parent 5a2914a2
###############################################################################
# This file is part of SWIFT.
# Coypright (c) 2012 Pedro Gonnet (pedro.gonnet@durham.ac.uk),
# Matthieu Schaller (matthieu.schaller@durham.ac.uk)
#
# 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
from numpy import *
# Generates a swift IC file for the Sedov blast test in a periodic cubic box
# Parameters
periodic= 1 # 1 For periodic box
boxSize = 1.
L = 101 # Number of particles along one axis
rho = 1. # Density
P = 1.e-5 # Pressure
E0= 1.e5 # Energy of the explosion
gamma = 5./3. # Gas adiabatic index
fileName = "sedov.hdf5"
#---------------------------------------------------
numPart = L**3
mass = boxSize**3 * rho / numPart
internalEnergy = P / ((gamma - 1.)*rho)
if L%2 == 0:
print "Number of particles along each dimension must be odd."
exit()
#Generate particles
coords = zeros((numPart, 3))
v = zeros((numPart, 3))
m = zeros((numPart, 1))
h = zeros((numPart, 1))
u = zeros((numPart, 1))
ids = zeros((numPart, 1), dtype='L')
for i in range(L):
for j in range(L):
for k in range(L):
index = i*L*L + j*L + k
x = i * boxSize / L + boxSize / (2*L)
y = j * boxSize / L + boxSize / (2*L)
z = k * boxSize / L + boxSize / (2*L)
coords[index,0] = x
coords[index,1] = y
coords[index,2] = z
v[index,0] = 0.
v[index,1] = 0.
v[index,2] = 0.
m[index] = mass
h[index] = 1.2 * boxSize / L
u[index] = internalEnergy
ids[index] = index
if 2*x == boxSize and 2*y == boxSize and 2*z == boxSize:
u[index] = u[index] + E0
#--------------------------------------------------
#File
file = h5py.File(fileName, 'w')
# Header
grp = file.create_group("/Header")
grp.attrs["BoxSize"] = boxSize
grp.attrs["NumPart_Total"] = numPart
#Runtime parameters
grp = file.create_group("/RuntimePars")
grp.attrs["PeriodicBoundariesOn"] = periodic
#Particle group
grp = file.create_group("/PartType0")
ds = grp.create_dataset('Coordinates', (numPart, 3), 'd')
ds[()] = coords
ds = grp.create_dataset('Velocity', (numPart, 3), 'f')
ds[()] = v
ds = grp.create_dataset('Mass', (numPart,1), 'f')
ds[()] = m
ds = grp.create_dataset('SmoothingLength', (numPart,1), 'f')
ds[()] = h
ds = grp.create_dataset('InternalEnergy', (numPart,1), 'f')
ds[()] = u
ds = grp.create_dataset('ParticleIDs', (numPart, 1), 'L')
ds[()] = ids
file.close()
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